Climate cycles persisting for millions of years on ancient Mars left a record of rhythmic patterns in thick stacks of sedimentary rock layers.
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Science Mission Directorate
NASA uses orbiting observers and robotic landers to investigate the planets, moons, comets, and asteroids of our Solar System.
Latest Features
NASA Orbiter Finds Martian Rock Record With 10 Beats to...
Next NASA Mars Mission Rescheduled for 2011
NASA's Mars Science Laboratory will launch two years later than previously planned, in the fall of 2011.
A Pinwheel in X-rays
Chandra snaps one of the longest exposures ever obtained of a spiral galaxy -- in X-rays.
More Features
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NASA Finishes Listening for Phoenix Mars Lander
After nearly a month of daily checks to determine whether Martian NASA's Phoenix Mars Lander would be able to communicate again, the agency has stopped using its Mars orbiters to hail the lander and listen for its beep.
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Enceladus Jets: Are They Wet or Just Wild?
Scientists continue to search for the cause of the geysers on Saturn's moon Enceladus.
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NASA Prepares for New Juno Mission to Jupiter
NASA is officially moving forward on a mission to conduct an unprecedented, in-depth study of Jupiter.
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Dawn Glides Into New Year
NASA's Dawn spacecraft shut down its ion propulsion system today as scheduled.
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NASA Spacecraft Detects Buried Glaciers on Mars
NASA's Mars Reconnaissance Orbiter has revealed vast Martian glaciers of water ice under protective blankets of rocky debris at much lower latitudes than any ice previously identified on the Red Planet.
News Releases
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NASA Prepares for New Juno Mission to Jupiter
11.24.08 - NASA is officially moving forward on a mission to conduct an unprecedented, in-depth study of Jupiter.
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Mysterious Source of High-Energy Cosmic Radiation Discovered
11.19.08 - Scientists announced Wednesday the discovery of a previously unidentified nearby source of high-energy cosmic rays.
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Hubble Directly Observes a Planet Orbiting Another Star
11.13.08 - NASA's Hubble Space Telescope has taken the first visible-light snapshot of a planet circling another star.
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Hubble Announces A Major Extrasolar Planet Discovery
11.07.08 - NASA will hold a Science Update to report on a significant discovery about planets orbiting other stars at 2:30 p.m. EST, Thursday, Nov. 13.
 "What's Up?")
 "Mars Exploration Rover Spirit")
Podcasts
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NASACast: Solar System
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NASA's monthly guide to watching the night sky.
Media Resources
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News Briefing: Mars Science Laboratory Delay
12.04.08 - Administrator Griffin and other NASA officials brief reporters on the delay of the Mars Science Laboratory mission from 2009 to 2011.
› View PDF (113 KB PDF)
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