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12.11.2006 - Don Pettit Goes to Antarctica
Science Education: Astronaut Don Pettit has just landed in the meteorite-rich ice fields of Antarctica where he plans to launch a series of edgy and entertaining science experiments to be shared with the general public. |
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11.2.2006 - First Light for Hinode
Space Weather: A new space telescope onboard Japan's Hinode spacecraft is beaming back some fantastic images of the sun. |
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10.30.2006 - Sci-fi Life Support
Space Station: Researchers are putting the finishing touches on a new life support system for the ISS that seems to come right out of the pages of science fiction. |
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10.26.2006 - A Growing Intelligence around Earth
Earth Science: A satellite orbiting Earth is learning to think for itself. This artificial intelligence offers a powerful new way to study Earth, and it may prove useful on other planets, too. |
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10.20.2006 - 2006 Transit of Mercury
Looking Up: Mark your calendar: On Wednesday, Nov 8th, the planet Mercury will pass directly in front the Sun. |
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10.3.2006 - Novarupta
Earth Science: Climate scientists are learning new things from an old and very powerful Alaskan volcano: Novarupta. |
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9.28.2006 - Strange Moonlight
Looking Up: When the Harvest Moon rises on Oct. 6th, go outside. You may notice a few puzzling things. |
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9.21.2006 - Surprises from the Edge of the Solar System
Space Science: NASA's Voyager 1 spacecraft has entered a new realm of space, and it's beaming back some surprises.
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9.13.2006 - Electric Ice
Lightning: Imagine looking inside a million clouds. That's what NASA researchers have done using the TRMM satellite to explore the strange connection between lightning and ice.
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9.1.2006 - Solar Sentinels
Space Weather: With astronauts returning to the Moon, reliable forecasts of space weather are more important than ever. A new proposed mission called "Solar Sentinels" would surround the sun with spacecraft to keep an eye on solar activity.
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8.30.2006 - SMART-1 to Crash the Moon
The Moon: A European spaceship is about to crash into the Moon. Amateur astronomers may be able to observe the impact. |
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8.23.2006 - Mariner Meteor Mystery, Solved?
Mars Exploration: In 1967, NASA's Mariner 4 spacecraft was hit by a surprising flurry of meteoroids--a shower more intense than any Leonid meteor storm. Where did the meteoroids come from? It's been a mystery for 40 years. |
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8.15.2006 - Backward Sunspot
Space Weather: A strange little sunspot may herald the coming of one of the stormiest solar cycles in decades. |
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8.4.2006 - Lunar X Games
The Moon: The X Games are underway in Los Angeles. One day--who knows?--they might be held on the Moon. |
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7.28.2006 - Crash Landing on the Moon
The Moon: At the dawn on the Space Age, the first spaceship to reach the Moon crashed. Forty-seven years later, NASA plans to do it again. |
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7.26.2006 - Birthplace of Hurricanes
Earth Science: NASA researchers are joining an international campaign to catch hurricanes in the act of being born. |
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7.19.2006 - Wide Awake in the Sea of Tranquillity
Astronauts: The fourth installment of Science@NASA's Apollo Chronicles explains why Neil Armstrong and Buzz Aldrin couldn't fall asleep in the Sea of Tranquillity. |
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6.26.2006 - Lunar Swirls
The Moon: Pale swirls on the surface of the Moon have been puzzling researchers for decades. Fresh clues are in the offing as NASA prepares a new round of lunar exploration. |
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6.13.2006 - A Meteoroid Hits the Moon
The Moon: Last month, astronomers watched a meteoroid blast a hole in the lunar Sea of Clouds. Their video of the event is a must-see. |
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6.9.2006 - Corkscrew Asteroids
Asteroids: A tiny asteroid corkscrewing around Earth for the past seven years is about to leave the neighborhood. |
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6.5.2006 - Huge Storms Converge
Jupiter: The two biggest storms in the solar system are about to go bump in the night, in plain view of backyard telescopes. |
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6.1.2006 - Droids on the ISS
International Space Station: A little droid is roaming the corridors of the International Space Station, and more are on the way. |
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5.30.2006 - An Alignment of Stars and Planets
Looking Up: Something remarkable is about to happen in the evening sky. Three planets and a star cluster are converging for a close encounter you won't want to miss. |
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5.26.2006 - Good News and a Puzzle
Earth Science: Earth's ozone layer appears to be on the road to recovery, but the reasons why aren't fully understood. |
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5.22.2006 - Hard-nosed Advice to Lunar Prospectors
The Moon: A 22-year veteran of prospecting and mining on Earth has some no-nonsense advice for lunar explorers.
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5.5.2006 - Breathing Moonrocks
The Moon: The Moon has plentiful oxygen for future astronauts. It's lying on the ground. NASA researchers have developed a device that can extract breathable oxygen from lunar soil. |
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4.28.2006 - The Sky is Falling
The Moon: Every day the Moon is hit by a surprising number of meteoroids. NASA researchers are poking through old Apollo data to find out if these projectiles pose a threat to future explorers. |
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4.19.2006 - Lunar Dust Buster
The Moon: NASA researchers have built a device that picks up moondust and takes it for a ride on an electrodynamic wave--like a surfer on the ocean. Their invention could come in handy when astronauts return to the Moon. |
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4.10.2006 - In Search of Water, NASA Spacecraft to Hit the Moon
The Moon: NASA today announced that a small spacecraft named LCROSS has been selected to travel to the moon to look for precious water ice at the lunar south pole in October 2008. |
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4.4.2006 - Magnetic Moondust
The Moon: Researchers have discovered something odd about fine-powdered moondust--it's magnetic. This raises the possibility that magnets could be used for dust abatement when astronauts return to the moon. |
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3.24.2006 - Mini-Comets Approaching Earth
Comets & Meteors: A cometary "string-of-pearls" will fly past Earth in May 2006 giving astronomers a fantastic view of a comet in its death throes. |
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3.22.2006 - Was Einstein Wrong About Space Travel?
Life Science: According to Einstein's theory of relativity, space travel is a good way to stay young. But Einstein forgot one thing--the biology of space radiation. |
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3.15.2006 - Moonquakes
The Moon: NASA astronauts are going back to the moon and when they get there they may need quake-proof housing. The moon is shaking with "shallow moonquakes" that researchers don't fully understand. |
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3.10.2006 - Solar Storm Warning
Space Weather: This week researchers announced that a storm is coming--the most intense solar maximum in fifty years. |
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3.9.2006 - Radical! Liquid Water on Enceladus
Planetary Exploration: NASA's Cassini spacecraft has found evidence of liquid water reservoirs that erupt in Yellowstone-like geysers on Saturn's moon Enceladus. |
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3.6.2006 - Solar Minimum has Arrived
Solar Physics: Something's happening on the sun: all the sunspots have vanished. Solar physicists say this is a sign that solar minimum has arrived. |
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3.3.2006 - Jupiter's New Red Spot
Jupiter: Backyard astronomers, grab your telescopes. Jupiter is growing a new red spot. |
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2.21.2006 - See the Incredible Shrinking Planet
Looking Up: Mercury makes a rare appearance in the evening sky this week. |
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2.14.2006 - Big Air on the Moon
The Moon: Olympic aerialist and gold medal winner Eric Bergoust discusses the wonderful possibilities of ski-jumping on the moon. |
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2.8.2006 - Lunar Olympics
Looking Up: If winter Olympic Games were held on the moon, where would they be? The lunar Alps, of course. |
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1.30.2006 - The Mysterious Smell of Moondust
The Moon: Long after the last Apollo astronaut left the moon, a mystery lingers: Why does moondust smell like gunpowder? |
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1.26.2006 - SuitSat
International Space Station: Using a simple police scanner or ham radio, you can listen to a disembodied spacesuit circling Earth. |
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1.17.2006 - Apollo Chronicles: Jack Skis the Moon
The Moon: The ski report is out of this world: clear skies, no wind and deep powder. We're talking about the moon. |
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1.3.2006 - Apollo Chronicles: Dark Shadows
Astronauts: Astronauts have noticed something strange about shadows on the moon. |
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11.28.2005 - Shadows of Venus
Looking Up: The planet Venus is growing so bright, it's actually casting shadows. You may be able to see them this week. |
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11.3.2005 - Fireball Sightings
Looking Up: Earth is orbiting through a swarm of space debris that may be producing an unusual number of nighttime fireballs. |
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10.21.2005 - How is a Rocket like a Guitar?
Science Education: Guitars and rockets have a lot in common, but what's good for a musician might spell trouble for an astronaut. |
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10.4.2005 - The Da Vinci Glow
The Moon: Five hundred years ago, Leonardo Da Vinci solved an ancient astronomical riddle: the mystery of Earthshine. |
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8.30.2005 - Moon Tennis
The Moon: Humans are heading back to the Moon. Tennis, anyone? Tennis pro Andy Roddick ponders the physics of his game on other worlds. |
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8.26.2005 - Sunset Planets
Looking Up: Venus, Jupiter and the crescent Moon are gathering for a beautiful sunset sky show. |
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8.25.2005 - Plastic Spaceships
NASA Technology: A new "designer material" derived from the plastic of household trash bags could help protect astronauts on their way to Mars. |
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8.12.2005 - Floating Back to School
Science Education: High school students and teachers are going to get a taste of astronaut training this fall. Would you like to join them? |
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8.10.2005 - Crackling Planets
Mars Exploration: Astronauts on the Moon and Mars are going to have to cope with an uncommon amount of static electricity. |
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8.5.2005 - Prozac for Plants
Fundamental Biology: How do you get plants to grow on Mars? Step One: relieve their anxiety. |
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7.29.2005 - 10th Planet Discovered
Planetary Astronomy: Astronomers have found a new world bigger than Pluto in the outer reaches of the solar system. |
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7.27.2005 - The Next Giant Leap
NASA Technology: The next big thing is small: Nanotechnology could lead to radical improvements in space exploration. |
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7.22.2005 - The 2005 Perseid Meteor Shower
Looking Up: The planet Mars joins the Perseid meteor shower for a beautiful display on August 12th. |
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7.7.2005 - Beware the Mars Hoax
Looking Up: There's a rumor going around about Mars: It's racing toward Earth and soon to be as large ... as the full Moon? |
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6.28.2005 - Deep Impact
Comets: On the 4th of July, a NASA spacecraft will blast a hole in Comet Tempel 1. |
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6.22.2005 - Spectacular Conjunction
Looking Up: Mercury, Venus and Saturn are converging for a spectacular close encounter this weekend. |
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6.20.2005 - Summer Moon Illusion
Looking Up: The lowest-hanging full moon in 18 years is going to play tricks on your brain this week.
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6.3.2005 - NASA Naps
Fundamental Biology: NASA-supported sleep researchers are learning new and surprising things about naps. |
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5.27.2005 - Approaching Mars
Mars Exploration: Earth and Mars will have a breathtaking close encounter in October 2005. |
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5.24.2005 - A Hitchhiker's Guide to the Moon
The Moon: NASA plans to put a laser in orbit around the Moon to map its surface for future explorers. |
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5.9.2005 - Mysterious Cancer
Fundamental Biology: Researchers agree that space radiation can cause cancer. They're just not sure how. |
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4.14.2005 - Moon Water
The Moon: Come and get it? Some researchers believe there's water on the Moon in reach of human explorers. |
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4.1.2005 - Solar Eclipse
Looking Up: On April 8th in North America crescent-shaped sunbeams will dapple the ground during a partial solar eclipse. |
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3.28.2005 - Picking on Einstein
Fundamental Physics: By measuring the shape of space with exquisite precision, NASA's Gravity Probe B aims to confirm Einstein's theory of relativity ... or provide the first evidence against it. |
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3.23.2005 - Was Einstein a Space Alien?
Fundamental Physics: One hundred years ago, Albert Einstein stunned physicists with his out-of-this-world ideas. |
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3.21.2005 - NASA on your iPod
Science Education: Using an iPod or any portable MP3 player, you can now explore the Universe while driving, jogging, waiting in line ... just about anywhere. It's easy: tune in to the Science@NASA podcast. |
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3.18.2005 - En Route to Mars, The Moon
The Moon: Why colonize the Moon before going to Mars? NASA scientists give their reasons. |
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3.9.2005 - Cutting Edge Physics for Us All
Science Education: In April, people from all walks of life are invited to join top scientists at a unique conference to discuss the mysteries of modern physics. |
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2.17.2005 - Blue Skies on Saturn
Planetary Exploration: NASA's Cassini spacecraft has discovered another world with blue skies: Saturn. |
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2.16.2005 - Ultrasound for Astronauts
Astronauts: Far away from doctors and hospitals, astronauts in space are learning to give themselves checkups using ultrasound. |
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2.10.2005 - Brain Bites
Science Education: How do you go to the bathroom in space? Amusing one-minute videos from NASA answer some of the questions about space you were afraid to ask. |
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1.31.2005 - The Sands of Mars
Mars Exploration: Driving, digging, mining: these are things astronauts will be doing one day in the sands of Mars. It's not as simple as it sounds. |
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1.27.2005 - Sickening Solar Flares
Space Weather: The biggest solar proton storm in 15 years erupted last week. NASA researchers discuss what it might have done to someone on the Moon. |
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1.16.2005 - Sights and Sounds of Titan
Planetary Exploration: The ESA Huygens probe parachuted to Titan on Jan. 14th, landed safely, and transmitted the first sounds and pictures from the surface of Saturn's giant moon. |
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1.10.2005 - Team Me Up, Scotty
Astronauts: Can a computer teach humans to interact more successfully with other human beings? NASA-funded researchers are "pushing the envelope" to find out. |
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12.30.2004 - Parachuting to Titan
Planetary Exploration: Get ready for two of the strangest hours in the history of space exploration. That's how long it will take the Huygens probe to parachute to the surface of Saturn's mysterious moon Titan. |
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12.22.2004 - Christmas Moon
Looking Up: A special full moon will brighten the nights around Christmas. |
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12.10.2004 - Why do Workouts Work?
Fundamental Biology: Most machines don't improve with use. Old pickup trucks don't gradually become Ferraris just by driving them fast, and a pocket calculator won't change into a supercomputer by crunching lots of numbers. The human body is different... |
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12.6.2004 - The 2004 Geminid Meteor Shower
Looking Up: The best meteor shower of 2004 peaks on Dec. 13th. |
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11.29.2004 - The Moon Eclipses Jupiter
Looking Up: Mark your calendar. On Tuesday, Dec. 7th, about an hour before sunrise, the crescent Moon will eclipse Jupiter. |
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11.2.2004 - Spellbinding Planets
Looking Up: You won't want to miss this: Venus and Jupiter, the two brightest planets, will be beautifully close together just before sunrise on Thursday, Nov. 4th, and Friday, Nov. 5th. |
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10.28.2004 - Tumbleweeds in the Bloodstream
Fundamental Biology: Tiny sensors, shaped like tumbleweed and small enough to fit inside a blood vessel, might one day ride to space inside astronauts' bodies, warning the space travelers when radiation is damaging their cells. |
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10.22.2004 - Blinding Flashes
Fundamental Biology: Years after exposure to space radiation, many astronauts' vision becomes clouded by cataracts. Understanding why may shed light on cataracts suffered by elderly people. |
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10.18.2004 - Solar Minimum is Coming
Space Weather: Something strange happened on the sun last week: all the sunspots vanished. This is a sign, say forecasters, that solar minimum is coming sooner than expected. |
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10.13.2004 - Total Lunar Eclipse
Lunar Eclipse: On Wednesday night, Oct. 27th, North Americans can see a total eclipse of the moon. |
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10.6.2004 - Electronic Nose
NASA Technology: NASA researchers are developing an exquisitely sensitive artificial nose for space exploration. |
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9.14.2004 - Beware: Io Dust
Jupiter: Jupiter's moon Io is shooting tiny volcanic projectiles at passing spacecraft. |
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9.3.2004 - Genesis Reentry
Meteors: On September 8th, a daylight fireball will streak across the western United States. It's Genesis, returning samples of the Sun to Earth. |
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9.2.2004 - Gentlemen, start your gyros!
Fundamental Physics: Four months after launch, NASA's Gravity Probe B spacecraft has begun its search for an elusive space-time vortex around Earth. |
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8.27.2004 - The Pathway Less Traveled
Fundamental Biology: Altered gravity plays an unexpected role in obesity and weight loss. |
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8.19.2004 - Have Blood, Will Travel
Fundamental Biology: The radiation astronauts encounter in deep space could put vital blood-making cells in jeopardy. |
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8.16.2004 - Soldering Surprise
Space Station: There's nothing routine about working in space, as astronaut Mike Fincke found out recently when he did some soldering onboard the International Space Station. |
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8.9.2004 - Horseflies and Meteors
Looking Up: Like bugs streaking colorfully down the side window of a moving car, Earthgrazing Perseid meteors could put on a pleasing show after sunset on August 11th. |
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7.23.2004 - Spinning Brains
Living in Space: One day, astronauts could zip across the solar system in spinning spaceships. How will their brains adapt to life onboard a twirling home where strange "Coriolis forces" rule? |
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7.20.2004 - What Neil & Buzz Left on the Moon
Earth and Moon: A cutting-edge Apollo 11 science experiment left behind in the Sea of Tranquility is still running today. |
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7.13.2004 - Voyager 1, Prepare for Action
Solar Weather: At the outer limits of our solar system, a solar shock wave is about to overtake NASA's Voyager 1 spacecraft. |
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7.7.2004 - Blue Moon
Looking Up: There's a Blue Moon coming on July 31st. But will it really be blue? Believe it or not, scientists say blue-colored moons are real. |
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6.25.2004 - The 2004 Perseid Meteor Shower
Looking Up: Meteoroids in space since the Civil War will spice up this summer's Perseid meteor shower. |
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6.21.2004 - Whatever happened to ... Virtual Reality?
Robots: Twenty years after the first wave of hype, VR is making a comeback in NASA laboratories. |
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6.16.2004 - Mob Rules
Fundamental Physics: An experiment onboard the International Space Station is helping physicists decipher the group behavior of atoms and molecules. |
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6.10.2004 - Bacterial Integrated Circuits
NASA Technology: By interfacing bacteria to silicon chips, NASA-supported researchers have created a device that can sense almost anything. |
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5.18.2004 - Waste Not
NASA Technology: NASA-supported researchers are working to develop a fuel cell that can extract electricity from human waste. |
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5.14.2004 - The Electric Border Collie
NASA Technology: Using electric fields, NASA-supported researchers are learning to herd microbes for the benefit of astronauts and Homeland Security. |
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5.6.2004 - Was Galileo Wrong?
Fundamental Physics: Could one of the fundamental assumptions of modern physics be wrong? A group of NASA-supported researchers are going to find out by bouncing laser beams off the Moon. |
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5.3.2004 - UFO Planet
Looking Up: The planet Venus, so bright it is often mistaken for an alien spaceship, reaches maximum brilliance this week. Through a small telescope or a good pair of binoculars, Venus looks like a beautiful crescent. |
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4.21.2004 - A Gathering of Planets: Part II
Looking Up: Four planets, six moons, Earthshine, lunar mountains, the phases of Venus, a planet-sized hurricane and Saturn's rings: you can see them all this week. |
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4.20.2004 - In Search of Gravitomagnetism
Fundamental Physics: Gravity Probe B has left Earth to measure a subtle yet long-sought force of Nature. |
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4.13.2004 - Resilient Rockets
NASA Technology: Spacecraft and automobiles could benefit from a new NASA technology that protects the insides of scorching-hot engines. |
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4.9.2004 - Mystery in a Cup of Tea
Fundamental Physics: Using odds and ends from the space station pantry, researchers have learned something new about fluid physics. |
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4.7.2004 - A Black Box for People
NASA Technology: Developed by NASA for astronauts, a mouse-sized device called "the CPOD" does for people what black boxes do for airplanes. |
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3.31.2004 - Venus and the Pleiades
Looking Up: This weekend, the planet Venus will have a rare close encounter with the Pleiades star cluster. |
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3.26.2004 - Evicting Einstein
Fundamental Physics: A physics experiment on the drawing board for the International Space Station could help find the grand unifying "Theory of Everything." |
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3.17.2004 - Cold Peril: The Continuing Adventures of Ulysses
Solar Physics: The NASA/ESA Ulysses spacecraft is perilously cold as it begins a newly extended mission to study the sun. |
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3.12.2004 - Outbreak Alerts from Space
Earth Science: With the help of Earth-watching satellites, scientists can identify high-risk hot spots for deadly diseases before outbreaks strike. |
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3.3.2004 - A Close Encounter with Jupiter
Jupiter: This week, Earth and Jupiter are only 400 million miles apart--the nearest the two worlds will be all year. |
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2.25.2004 - Greenhouses for Mars
Life Science: When humans go to the moon or Mars, they'll probably take plants with them. NASA-supported researchers are learning how greenhouses are going to work on other planets. |
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2.17.2004 - Can People Go to Mars?
Cosmic Rays: Space radiation between Earth and Mars poses a hazard to astronauts. How dangerous is it out there? NASA scientists are working to find out. |
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2.12.2004 - A New Form of Matter: II
Fundamental Physics: NASA-supported researchers have discovered a weird new phase of matter called fermionic condensates. |
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2.3.2004 - The Fruit Fly in You
Fundamental Biology: NASA-supported researchers are going to send fruit flies to the International Space Station to learn what space travel does to the genes of astronauts. |
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1.23.2004 - Spooky Atomic Clocks
Fundamental Physics: NASA-funded researchers are using a spooky property of quantum mechanics called "entanglement" to improve atomic clocks--humanity's most precise way to measure time. |
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1.22.2004 - Destination: Meridiani Planum
Mars Exploration: On January 24, 2004, NASA's Mars rover Opportunity is scheduled to land on a Martian plain in search of evidence for water. |
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1.20.2004 - Mars Mice
Mars Exploration: In 2006 a group of mice-astronauts will orbit Earth inside a spinning spacecraft. Their mission: to learn what its like to live on Mars. |
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1.16.2004 - Stardust Surprise
Comets: When NASA's Stardust spacecraft flew by Comet Wild 2 earlier this month, the probe saw something that surprised astronomers. |
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1.12.2004 - Storm Warnings
Earth Science: A new device onboard two NASA satellites could improve 3- to 12-hour forecasts of severe weather. |
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1.8.2004 - In Colliding Galaxies: Planetary Ore
Chandra X-ray Observatory: NASA's Chandra X-ray Observatory has discovered rich deposits of neon, magnesium, and silicon in a pair of colliding galaxies known as The Antennae. |
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12.31.2003 - The World in a Grain of Stardust
Origins: On January 2, 2004, NASA's Stardust spacecraft will fly through a comet and collect samples of dust for return to Earth. |
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12.30.2003 - Destination: Gusev Crater
Mars Exploration: On January 3, 2004, NASA's Mars rover Spirit is scheduled to land in a strange crater that might be an ancient martian lake bed. |
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12.29.2003 - Earth's Inconstant Magnetic Field
Earth Science: Our planet's magnetic field is in a constant state of change, say researchers who are beginning to understand how it behaves and why. |
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12.17.2003 - Christmas Day Mars Landing
Mars Exploration: In search of alien life, the European Space Agency's Beagle 2 probe will parachute to the surface of Mars on Dec. 25th. |
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12.9.2003 - Christmas Sunset
Looking Up: Look west as night falls on Dec. 25th for a lovely pairing of brilliant Venus and the crescent moon. |
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12.5.2003 - Dixieland Auroras
Space Weather: On Nov. 20, 2003, a modest solar explosion sparked auroras in some unusual places. |
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12.3.2003 - Membranes on Mars
Mars Exploration: Thin membranes developed by NASA-funded researchers could help people go to Mars--and clean the air here on Earth. |
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12.1.2003 - Space: A bad influence on microbes?
International Space Station: At least one common disease-causing microbe becomes more virulent in simulated microgravity. Scientists studying this phenomenon hope to gain a better understanding of infectious disease. |
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11.12.2003 - The Sun Goes Haywire
Space Weather: Solar maximum is years past, yet the sun has been remarkably active lately. Is the sunspot cycle broken? |
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11.10.2003 - Houston, We Have a Solution
Space Station: New research aboard the space station aims to adapt a tried-and-true repair tool to weightlessness. |
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11.4.2003 - Lunar Eclipse
Looking Up: On Saturday, Nov. 8th, the full moon will glide through our planet's shadow and turn a delightful shade of sunset-red. |
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10.31.2003 - The Curious Tale of Asteroid Hermes
Asteroids: Asteroid Hermes has a knack for flying past Earth without anyone noticing. It's approaching our planet again this week, but this time we know it's coming. |
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10.30.2003 - The Hidden Life of Thunderstorms
Lightning: NASA scientists are using unmanned aircraft to explore the invisible electric and magnetic fields of thunderstorms. What they discover might help unravel a mystery about the charge on our planet. |
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10.23.2003 - Solar Superstorm
Space Weather: Scientists are beginning to understand a historic solar storm in 1859. One day, they say, it could happen again. |
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10.20.2003 - Two Magical Mornings
Looking Up: Before dawn on Tuesday, Oct. 21st, and Wednesday, Oct. 22nd, sky watchers can see two bright planets, the crescent moon and a meteor shower. |
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10.16.2003 - Liquids on Pause
International Space Station: Upcoming experiments planned for the International Space Station will help engineers on Earth learn to handle undercooled fluids. |
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10.10.2003 - The 2003 Leonid Meteor Shower
Looking Up: An unusual double Leonid meteor shower is going to peak next month over parts of Asia and North America. |
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10.7.2003 - DNA Biosentinels
Fundamental Biology: A NASA-supported researcher is learning how to snag strands of DNA and examine them one by one under a microscope. |
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10.2.2003 - The Goldilocks Zone
Astrobiology: Researchers are finding that life can thrive in some unexpected places on Earth--and perhaps elsewhere in the Universe, too. |
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9.25.2003 - Space Station Ingenuity
Space Station: Researchers have dreamed up some ingenious experiments using odds and ends onboard the International Space Station. |
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5.16.2003 - Mesoamerica Burning
Earth Science: With help from NASA scientists and satellites, Central American governments are piecing together a "bio-corridor" of protected lands stretching from Mexico to South America. They hope the gigantic preserve will help their people and the environment flourish together. |
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11.22.2002 - Balancing Brains
Life Science: NASA researchers have discovered something odd: if you put an astronaut in a spinning chair, their brains might decide they are back in space. Why? The answer may reveal important lessons about human learning. |
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8.28.2001 - Fighting Wildfires Before They Start
Earth Science: Using space-based satellite data and sophisticated computer programs, scientists are learning more about capricious wildfires -- including where they're likely to start and what we can do to prevent them. |
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8.24.2001 - A New Comet
Comets: Last weekend an amateur astronomer peered through his telescope and found a new comet the old-fashioned way -- by looking! |
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8.22.2001 - The Strange Spires of Callisto
Moons of Jupiter: NASA's Galileo spacecraft has spotted curious icy spires jutting from the surface of Jupiter's moon Callisto. The bizarre-looking natural features have researchers wondering if the surface of the frigid moon might be a more dynamic place than they once thought.
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8.21.2001 - Smoke Sentry in Space
Earth Science: In the past firefighters looked toward the sky for relief from relentless
wildfires, wishing for rain or perhaps a cool breeze. Now there's a
different kind of aid beaming down from the heavens.
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8.17.2001 - Having a Ball on Mars
Mars Exploration: An amusing accident in the Mojave desert has inspired a new kind of Mars rover -- a two-story high beach ball that can descend to the Martian surface and explore vast expanses of the Red Planet. |
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8.16.2001 - Into the Storm
Earth Science: While most people are trying to avoid the perils of this year's hurricanes, scientists will soon be flying right into the mighty storms! |
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8.15.2001 - Samples of the Future
Materials Science: The advanced space ships of tomorrow will be crafted from far-out materials with extraordinary resistance to the harsh environment of space. An experiment strapped to the outside of the ISS aims to put such materials through their paces. |
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8.9.2001 - Horse Flies and Meteors
Comets & Meteors: Like bugs streaking down the side window of a moving car, long and colorful Perseid Earthgrazers could put on a remarkable show before midnight on August 11th. |
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8.7.2001 - Mixed Up in Space
Living in Space: Humans can become confused and disoriented (and even a little queasy) in an alien world where up and down have no meaning. |
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8.3.2001 - Another Daring Adventure for Galileo
Moons of Jupiter: NASA's durable Galileo space probe is heading for a close encounter with an alien volcano on Jupiter's moon Io. Galileo could fly right through a volcanic plume for the first time. |
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8.2.2001 - Gravity Hurts (So Good)
Living in Space: Strange things happen to the body when humans venture into space and the familiar pull of gravity vanishes. Scientists say exercise is the key to adapting to life in orbit -- and returning to Earth. |
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7.31.2001 - Anticipating the Perseids
Comets & Meteors: The 2001 Perseid meteor shower peaks on August 12th. Will it be an extraordinary sky show like last year -- or a moonlit disappointment? This story explains how to see for yourself. |
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7.27.2001 - Meteorites Don't Pop Corn
Asteroids: A fireball that dazzled Americans on July 23rd was a piece of a comet or an asteroid, scientists say. Contrary to reports, however, it probably didn't scorch any cornfields. |
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7.25.2001 - Space Seeds Return to Earth
Space Station: Seed pods from a commercial gardening experiment aboard the International Space Station are back on Earth. The far-out pods could hold the key to long-term habitation of space. |
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6.29.2001 - Wandering Mystery Planets
Astronomy: Scientists using the Hubble Space Telescope have spotted mysterious planet-sized objects apparently running loose in a distant cluster of stars. |
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6.28.2001 - El Niño Repellent?
Earth Science: New satellite images of the Pacific Ocean hint that El Niño will not return this winter. Instead, La Niña-like weather patterns will persist thanks to a "Pacific Decadal Oscillation" that might also repel strong El Niños. |
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6.26.2001 - All the World's a Stage ... for Dust
Earth Science: Tune in to a NASA website and watch giant dust clouds as they ride global rivers of air, cross-pollinating continents with topsoil and microbes. |
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6.21.2001 - A Close Encounter with Mars
Looking Up: Today Earth and Mars will experience their closest encounter in a dozen years. Stargazers won't want to miss the Red Planet blazing bright in the midnight sky. |
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6.19.2001 - Eclipse Safari
Looking Up: On Thursday, June 21st, the Moon's shadow will race across southern Africa for the only total solar eclipse of 2001. The display will delight some creatures and put others to sleep. |
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6.18.2001 - Mobile Homes for Microbes
Earth Science: African dust that crosses the Atlantic Ocean and brings beautiful sunsets to Florida also carries potentially harmful bacteria and fungi, a new study shows. |
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6.12.2001 - The Biggest Explosions in the Solar System
Space Weather: Scientists hope NASA's HESSI spacecraft will unravel an explosive mystery: the origin of solar flares. |
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6.7.2001 - Where No Telescope Has Gone Before
Astrophysics: Astronomers at NASA's Marshall Space Flight Center have captured the first focused hard x-ray images of the cosmos, opening a new window of the electromagnetic spectrum for practical exploration. |
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6.6.2001 - Bracing for an Interplanetary Traffic Jam
Planetary Exploration: NASA is improving its already-extraordinary traffic control system for interplanetary spacecraft, the Deep Space Network, in preparation for a flurry of activity in deep space. |
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6.1.2001 - Jellyplants on Mars
Living in Space: Scientists are creating a new breed of glowing plants --part mustard and part jellyfish-- to help humans explore the Red Planet. |
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5.30.2001 - What Space Needs: The Human Touch
Living in Space: NASA's Human Exploration and Development of Space enterprise tackles one of the toughest and most redeeming problems of all: sending humans into space. |
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5.29.2001 - Brainy 'Bots
Robots: NASA's own 'Bionic Woman' is applying artificial intelligence to teach robots how to behave a little more like human explorers. |
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5.24.2001 - Unmasking the Face on Mars
Mars Exploration: New high-resolution images and 3D altimetry from NASA's Mars Global Surveyor spacecraft reveal the Face on Mars for what it really is: a mesa. |
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5.23.2001 - Water-Witching From Space
Earth Science: Farmers will soon have a new tool for getting the most out of their fields. NASA's Aqua satellite will provide crucial information about the water in the ground and the weather on the horizon. |
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5.22.2001 - Dust Begets Dust
Earth Science: Everyone knows that dry weather leads to dusty soils, but new research suggests that dust might in turn lead to dry weather. |
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5.18.2001 - A Taste for Comet Water
Comets: When Comet LINEAR broke apart last year it revealed what many scientists thought all along: Water in Earth's oceans could have come from outer space. |
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5.17.2001 - The Pacific Dust Express
Earth Science: North America has been sprinkled with a dash of Asia! A dust cloud from China crossed the Pacific Ocean recently and rained Asian dust from Alaska to Florida.
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5.15.2001 - The Great Mars Rush
Looking Up: Hurtling toward Mars at 22,000 mph, Earth is heading for its closest encounter with the Red Planet in a dozen years. Mars is already a brilliant morning star and it will soon become a dazzling all-night spectacle. |
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5.10.2001 - Teaming Up on Space Plants
Living in Space: This week students, scientists, and astronauts will join forces to learn more about how plants grow on the International Space Station. |
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5.8.2001 - Roses for the Red Planet
Mars Exploration: What makes the Red Planet red? Right now the answer is iron oxide, but one day it could be roses say NASA scientists debating the prospects for plant life on Mars. |
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5.4.2001 - The Phantom Torso
International Space Station: An unusual space traveler named Fred is orbiting Earth on board the International Space Station. His job? To keep astronauts safe from space radiation. |
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5.3.2001 - Seven Billion Miles and Counting
Pioneer 10: Last week NASA received a weak signal from Pioneer 10, twice as far from the Sun as Pluto and speeding toward the constellation Taurus. |
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5.1.2001 - Space Weather on Mars
Mars Exploration: Future human explorers of Mars can leave their umbrellas back on Earth, but perhaps they shouldn't forget their Geiger counters! A NASA experiment en route to the Red Planet aims to find out. |
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4.27.2001 - The Transparent Sun
Space Weather: Giant sunspot 9393 is making a rare second transit across the face of the Sun. Its unusual reappearance came as no surprise to scientists who tracked the behemoth by peering right through our star. |
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4.26.2001 - The Mysterious Case of Crater Giordano Bruno
The Moon: A band of 12th century sky watchers saw something big hit the Moon 800 years ago. Or did they? A new study suggests the event was a meteoritic trick of the eye. |
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4.23.2001 - Look Ma -- No Hands!
Materials Science: Using a force field to float molten test samples precisely in mid-air, NASA's Electrostatic Levitator creates a unique environment for space-age materials processing. |
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4.19.2001 - Look, Listen, Lyrids!
Looking Up: The Lyrid meteor shower peaks on Sunday, April 22nd. Looking at the Lyrids can be fun, but now you can listen to them, too, using NASA's online meteor radar. |
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4.18.2001 - The Amazing Canadarm2
International Space Station: Crawling around the International Space Station like an agile worm, the newest Canadian robotic arm will be essential for building and maintaining the ISS. |
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4.17.2001 - Solving Charles Darwin's 'Abominable Mystery'
Astrobiology: About 130 million years ago the first flowering plants suddenly appeared -- an event Charles Darwin described as an 'abominable mystery.' Now, scientists using chemical fossils are unraveling this ancient puzzle. |
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4.13.2001 - Life as We Didn't Know It
Astrobiology: Biologists always thought life required the Sun's energy, until they found an ecosystem that thrives in complete darkness. |
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4.9.2001 - Leafy Green Astronauts
International Space Station: NASA scientists are learning how to grow plants in space. Such far-out crops will eventually take their place alongside people, microbes and machines in self-contained habitats for astronauts. |
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4.5.2001 - Was Johnny Appleseed a Comet?
Astrobiology: A new experiment suggests that comet impacts could have sowed the seeds of life on Earth billions of years ago. |
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4.4.2001 - Tireless Science Communication Pays Off
Science Education: Last night, the Science@NASA family of web sites received the 2000 Pirelli INTERNETional, a prestigious international award for science communications. |
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4.3.2001 - Plumbing the Space Station
Space Station: Nothing goes to waste on the International Space Station where nearly everything is recycled. What makes this ecologist's dream world work? Some of the fanciest plumbing in the solar system! |
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4.3.2001 - A Supernova Sheds Light on Dark Energy
Cosmology: A discovery by astronomers using the Hubble Space Telescope supports the notion that the Universe is filled with a mysterious form of energy pushing galaxies apart at an ever-increasing rate. |
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3.30.2001 - Back-to-School Time for Astrobiologists
Astrobiology: NATO and NASA are joining forces to host an Advanced Study Institute for students and practitioners of astrobiology. |
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3.28.2001 - The Lure of Hematite
The Red Planet: On rusty-red Mars, a curious deposit of gray-colored hematite (a mineral cousin of common household rust) could hold the key to the mystery of elusive Martian water. |
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3.27.2001 - Cannibal Coronal Mass Ejections
Space Weather: Fast-moving solar eruptions that overtake and devour their slower-moving kin can trigger long-lasting geomagnetic storms when they strike Earth's magnetosphere. |
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3.23.2001 - Beam it Down, Scotty!
Solar Power: Solar power collected in space and beamed to Earth could be an environmentally friendly solution to our planet's growing energy problems. |
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3.19.2001 - 2001 Mars Odyssey
Mars 2001: NASA's latest mission to Mars, an orbiter scheduled for launch on April 7th, will seek out underground water-ice and explore space weather around the Red Planet. |
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3.15.2001 - Welcome Interference
Astronomy: NASA scientists have combined starlight from two of the largest telescopes on Earth to form an extraordinary new tool in the search for planets outside the solar system. |
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3.14.2001 - Home, Space Home
International Space Station: On the ground, the International Space Station would be an odd looking building -- but space is an odd place to live! Find out how space weather, orbital free fall, and the Space Shuttle's payload bay shapes the architecture of the ISS. |
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3.10.2001 - The End is Mir
Space Station: On March 22, 2001, the Russian Space Agency will ignite the engines of a Progress rocket attached to Mir and send the 135-ton space station to a watery grave in the remote south Pacific. The space station will join a surprising parade of Mir-sized objects that hit Earth every year. |
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3.9.2001 - Science Out of Africa
Earth Science: Not all NASA adventures happen in space. In this story a scientist describes his down-to-Earth encounters with poisonous snakes, charging elephants and more! |
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3.6.2001 - After Three Strikes, Is La Niña Out?
Climate Science: La Niña-like conditions that have persisted in the Pacific Ocean for three years might finally subside this Fall. |
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3.1.2001 - Buck Rogers, Watch Out!
The Cutting Edge: NASA researchers are studying insects and birds, and using smart materials with uncanny properties to develop mindboggling new aircraft designs. |
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2.28.2001 - Magnetic Chains from Mars
Astrobiology: Curious chains of magnetic crystals have turned up in a meteorite from Mars. Scientists say ancient martian microbes may have kept them in line. |
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2.27.2001 - Gamma-rays from an Asteroid
Asteroid Eros: Perched on the surface of asteroid 433 Eros, NASA's NEAR spacecraft is beaming back measurements of gamma-rays leaking from the space rock's dusty soil. |
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2.27.2001 - Fire Photon Torpedoes!
Optical Computing: A NASA alliance with minority colleges and universities is working to create futuristic computers that operate using particles of light. |
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2.23.2001 - The Great Moon Hoax
Earth and Moon: Yes, there really is a Moon hoax, but the prankster isn't NASA. Moon rocks and common sense prove Apollo astronauts really did visit the Moon. |
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2.23.2001 - Apocalypse Then
Asteroids: A violent collision with a space rock, like the one that doomed the dinosaurs, may have also caused our planet's greatest mass extinction 250 million years ago. |
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2.20.2001 - Blazing Venus
Looking Up: This is a good time to keep an eye on the fiery second planet from the Sun as it approaches Earth and delivers a dazzling sky show. |
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2.14.2001 - It's Not Over Yet!
Asteroid Eros: Following one of the softest planetary landings ever, ground controllers have decided to extend the NEAR mission and gather unique data from the very surface of asteroid Eros. |
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2.9.2001 - Global Warming on Mars
The Red Planet: Artificial greenhouse gases that are bad news on Earth could provide the means to make Mars a more comfortable place for humans to live. |
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2.7.2001 - What Next, Galapagos?
Earth Science: The worst of the recent fuel spill in the Galapagos has passed ... or has it? Researchers plan to use NASA satellite data to keep an eye on the islands' unique ecosystem. |
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2.5.2001 - Carbonated Mars
The Red Planet: Here on Earth the only way to make carbonate rocks is with the aid of liquid water. Finding such rocks on Mars might prove, once and for all, that the barren Red Planet was once warm and wet.
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1.31.2001 - The Solar Wind at Mars
The Red Planet: Scientists think Mars once had a thicker atmosphere than it does today, perhaps even comparable to Earth's. But where did all that Martian air go? New evidence from NASA's Mars Global Surveyor spacecraft supports a long-held suspicion that much of the Red Planet's atmosphere was simply blown away -- by the solar wind. |
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1.30.2001 - Students make First Contact with the ISS
International Space Station: Last month a group of Chicago students talked to astronauts on the International Space Station via amateur radio. |
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1.26.2001 - Greening of the Red Planet
Astrobiology: A hardy microbe from Earth that thrives where others perish might one day transform the barren ground of Mars into arable soil. |
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1.25.2001 - Earth's Invisible Magnetic Tail
Space Weather: The first global views of our planet's magnetosphere, captured by NASA's IMAGE spacecraft, reveal a curious plasma tail that stretches toward the Sun. |
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1.23.2001 - Layers of Mars
Water on Mars: If layered regions on Mars are sedimentary deposits that formed underwater, as some scientists suspect, they could be the best places to hunt for elusive Martian fossils. |
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1.19.2001 - Earth Songs
Planet Earth: If humans had radio antennas instead of ears, we would hear a remarkable symphony of strange noises coming from our own planet. |
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1.18.2001 - The Eastern U.S. Keeps Its Cool
Planet Earth: While surface temperatures across most of the globe are on the rise, the eastern U.S. appears to be slowly cooling. |
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1.17.2001 - Precocious Earth
Astrobiology: Tiny zircon crystals found in ancient stream deposits suggest that Earth harbored continents and liquid water remarkably soon after our planet formed. |
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1.12.2001 - New Evidence for Black Holes
Black Holes: By seeing almost nothing, astronomers say they've discovered something extraordinary: the event horizons of black holes in space. |
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1.12.2001 - Ballooning for Cosmic Rays
Cosmic Rays: Astronomers have long thought that supernovas are the source of cosmic rays, but there's a troubling discrepancy between theory and data. A balloon flight could shed new light on the mystery. |
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1.11.2001 - Chandra Links Pulsar to Historic Supernova
X-ray Astronomy: New evidence from NASA's Chandra X-ray Observatory suggests that a known pulsar is the present-day counterpart to a stellar explosion witnessed by Chinese astronomers in 386 AD. |
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1.8.2001 - A Total Eclipse of the Sun -- on the Moon!
Looking Up: This Tuesday, January 9th, sky watchers across some parts of Earth will enjoy a total lunar eclipse. But what would they see if they lived, instead, on the Moon? |
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1.5.2001 - The Case of the Missing Mars Water
Water on Mars: Plenty of clues suggest that liquid water once flowed on Mars --raising hopes that life could have arisen there-- but the evidence remains inconclusive and sometimes contradictory. |
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1.4.2001 - Earth at Perihelion
Planet Earth: This morning at 5 o'clock Eastern Standard time Earth made its annual closest approach to the Sun -- an event astronomers call perihelion. |
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1.3.2001 - A New Look for the New Year
Science Education: The Science@NASA home page has a new look and we're pleased to offer a host of new services as well, including Spanish-language science stories ... and more! |
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12.29.2000 - Millennium Meteors
Comets & Meteors: One of the most intense annual meteor showers, the Quadrantids, will peak over North America on January 3, 2001. Sky watchers could see an impressive outburst numbering as many as 100 shooting stars per hour. |
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12.28.2000 - Galileo Looks for Auroras on Ganymede
Jupiter: NASA's durable Galileo spacecraft flew above the solar system's largest moon this morning in search of extraterrestrial Northern Lights. |
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12.27.2000 - Retreat of the West Antarctic Ice Sheet
Planet Earth: Scientists say that the West Antarctic Ice Sheet is retreating more slowly than they thought. In fact, it may have been growing just 8,000 years ago -- long after the end of the most recent Ice Age. |
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12.22.2000 - Watching the Angry Sun
Space Weather: As the Sun's stormy season approaches its zenith, scientists are using the largest coordinated fleet of spacecraft and ground observatories ever assembled to observe outbursts of solar radiation. |
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12.20.2000 - Martian Micro-Magnets
Astrobiology: The case for ancient life on Mars looks better than ever after scientists announced last week that they had discovered magnetic crystals inside a Martian meteorite -- crystals that, here on Earth, are produced only by microscopic life forms. |
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12.18.2000 - Ursid Meteor Surprise
Comets & Meteors: The normally meek Ursid meteor shower could surprise sky watchers with a powerful outburst on Dec 22nd when Earth passes through a dust stream from periodic comet Tuttle. |
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12.17.2000 - Learning from Lightning
Planet Earth: Little by little, lightning sensors in space are revealing the inner workings of severe storms. Scientists hope to use the technique to improve forecasts of deadly weather. |
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12.15.2000 - Christmas Eclipse
Looking Up: A solar eclipse is coming on Christmas Day, 2000. The winter landscape across parts of North America will assume an eerie cast, and cooler-than-usual winds might swirl, as the New Moon glides across the face of the Yuletide Sun. |
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12.12.2000 - The Incredible Shrinking Ozone Hole
Planet Earth: After reaching record-breaking proportions earlier this year the ozone hole over Antarctica has made a surprisingly hasty retreat. |
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12.8.2000 - The Baffling Geminid Meteor Shower
Comets & Meteors: Most meteor showers are caused by comets, but the Geminid meteor shower, which peaks next Wednesday morning, seems to come from a curious near-Earth asteroid named 3200 Phaethon. |
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12.6.2000 - A Disintegrating Glacier
Planet Earth: Many processes that shape the Earth's landscape happen too slowly to be witnessed in a human lifetime. But recent analysis of satellite imagery shows that a large glacier tongue on the coast of East Antarctica has disintegrated, changing the shape of the coastline almost overnight. |
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12.4.2000 - Sedimentary Mars
Water on Mars: New Mars Global Surveyor images reveal sedimentary rock layers on the Red Planet that may have formed underwater in the distant martian past. |
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12.4.2000 - EO-1: It's not just a good idea, it's the law!
Planet Earth: NASA's Earth Observing-1 satellite blasted off last week with a payload of new instruments that could revolutionize remote sensing. The work of the new satellite is regarded as so important it's actually required by law. |
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12.1.2000 - A New Star in Space
Looking Up: Something in the heavens is growing
brighter and it will soon become one
of the most eye-catching stars in the
night sky. No it's not a supernova.
It's the International Space Station! |
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11.29.2000 - Far-out Housekeeping on the ISS
Living in Space: Life in space is a daring adventure, but somebody still has to cook dinner and take out the trash. Science@NASA interviews two astronauts about the thrill and routine of daily life in orbit. |
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11.26.2000 - Microscopic Stowaways on the ISS
Living in Space: Wherever humans go microbes will surely follow, and the Space Station is no exception. In this article, NASA scientists discuss how astronauts on the ISS will keep potentially bothersome microorganisms under control. |
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11.22.2000 - A Solar Flare Stuns Stardust
Space Weather: Earlier this month one of the most intense solar radiation storms in decades temporarily blinded NASA's Stardust spacecraft, which is heading for a rendezvous with comet Wild-2. |
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11.21.2000 - Leonids Galore
Comets & Meteors: The art of predicting Leonid meteors officially became a science this weekend as sky watchers around the globe enjoyed three predicted episodes of shooting stars. This story includes video and some unusual pictures of Leonid fireballs. |
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11.15.2000 - Lighting Up the Ecosphere
Planet Earth: Using satellite images of city lights at night, NASA scientists are mapping the spread of urban areas around the globe and monitoring their impact on our planet's ecosystem. |
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11.13.2000 - Breathing Easy on the Space Station
Living in Space: Life support systems on the International Space Station provide oxygen, absorb carbon dioxide, and manage vaporous emissions from the astronauts themselves. It's all part of breathing easy in our new home in space. |
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11.9.2000 - Leonid Meteor Balloon Rises Again
Comets & Meteors: A team of NASA scientists and ham radio amateurs will loft a weather balloon toward the stratosphere on Nov. 18th to record the sights and sounds of the 2000 Leonid meteor shower. Readers can follow the balloon flight thanks to a live webcast at LeonidsLive.com.
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11.7.2000 - Much Ado about 2000 SG344
Asteroids: Later this century a relic from NASA's earliest space exploration efforts might return to Earth, if current estimates are confirmed. The near-Earth object, which follows an orbit almost identical to our planet's, looks like an asteroid but may be an Apollo-era rocket booster. |
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11.2.2000 - Water on the Space Station
Living in Space: Rationing and recycling will be an essential part of life on the newly-populated International Space Station. In this article, the first of a series about the challenges of living in orbit, Science@NASA explores where the crew will get their water and how they will (re)use it. |
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10.31.2000 - Trick or Treat: It's Toutatis!
Asteroids: NASA scientists are monitoring a large near-Earth asteroid that tumbled past our planet on the morning of Halloween 2000. Amateur astronomers can spot it for themselves in telescopes later this month and through binoculars when it passes even closer to Earth in Sept. 2004. |
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10.26.2000 - Lunar Leonids 2000
Comets & Meteors: Next month the Moon will plow through a stream of debris from comet Tempel-Tuttle, the parent of the Leonid meteor shower. Meteoroids that strike the Moon don't cause shooting stars as they do on our planet. Instead, they hit the lunar terrain at high speed. Scientists will be watching for signs of impacts as the Moon heads for a close encounter with the Leonids. |
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10.24.2000 - Storms Collide on Jupiter
Jupiter: NASA's Hubble Space Telescope has captured dramatic images of two swirling storms on Jupiter as they collided to form a truly titanic tempest. The resulting storm may be second in size only to the Great Red Spot itself. |
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10.20.2000 - Earth's Fidgeting Climate
Planet Earth: Is human activity warming the Earth or do recent signs of climate change signal natural variations? In this feature article, scientists discuss the vexing ambiguities of our planet's complex and unwieldy climate. |
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10.18.2000 - Weekend Meteors
Comets & Meteors: On Friday the 13th of October a brilliant fireball startled stargazers in Texas and Kansas. But that was just a piece of space junk -- a real meteor shower arrives this weekend when Earth passes through a stream of debris from Halley's comet. |
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10.16.2000 - Backyard Gamma-ray Bursts
Gamma-ray Bursts: With the successful launch of NASA's HETE-2 satellite, amateur astronomers will soon be able to spot the most powerful explosions in the Universe from the comfort of their own back yards. Professionals are also looking forward to the new data, which they hope will unravel the mysteries of gamma-ray bursts. |
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10.12.2000 - Sun Sample Return Mission Nears Launch
Solar Physics: The science payload for NASA's Genesis spacecraft, which will collect samples of the solar wind and return them to Earth, is now complete. Genesis is primed for liftoff in February 2001. Samples will parachute back to Earth two years later. |
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10.10.2000 - The Moonlit Leonids 2000
Comets & Meteors: Our planet is heading for a minefield of cosmic dust streams laid down by periodic comet Tempel-Tuttle. The result could be a series of three Leonid meteor outbursts on Nov. 17 and 18, 2000. The bright quarter Moon, which will lie in the constellation Leo, could overpower faint meteors. |
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10.6.2000 - Continents in Collision: Pangea Ultima
Planet Earth: Creeping more slowly than a human fingernail grows, Earth's massive continents are nonetheless on the move. Geologists say that in 250 million years the Atlantic Ocean could be just a distant memory while Earthlings will be able to walk from North America to Africa.
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10.4.2000 - Hitching a Ride on a Magnetic Bubble
Space Transportation: NASA-funded scientists are experimenting with miniature magnetospheres as an innovative means of space transportation. If the group succeeds, next-generation spacecraft may come equipped with fuel-efficient magnetic bubbles that speed their occupants from planet to planet and ward off the worst solar flares. |
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10.2.2000 - Peering into the Ozone Hole
Planet Earth: Concentrations of ozone-destroying gases are down, but the Antarctic ozone hole is bigger than ever. It turns out there's more to ozone destruction than just CFCs. Stratospheric ice crystals, the Antarctic Vortex, and global warming play a role, too. |
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9.28.2000 - Bright Planets and Random Meteors
Looking Up: This week's new Moon sets the stage for a sporadic meteor show featuring a cast of eye-catching stars and planets. Random meteors are most numerous this time of year in the northern hemisphere. |
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9.22.2000 - Interplanetary Fall
Seasons: Today Earth joins two other worlds in the solar system where it is northern autumn. Read this story to learn more about Earth's September equinox and to ponder the bizarre seasons of other planets. |
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