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Content with the tag: “cassini”
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Organics Erupting from Enceladus
NASA’s Cassini spacecraft “tasted” and sampled a surprising organic brew erupting in geyser-like fashion from Saturn’s moon Enceladus during a close flyby on March 12. Scientists are amazed that this tiny moon is so active, “hot,” and brimming with water vapor and organic chemicals.
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Explore Enceladus...Online!
This new web interactive from NASA’s Cassini mission features dazzling new imagery of Saturn’s moon Enceladus. It details the discovery of the plumes of ice particles and water vapor erupting from the surface and extending hundreds of kilometers into space. These plumes have put Enceladus on the map as an object of astrobiological study; the Cassini spacecraft just completed a specialized fly-through to get a closer look.
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Signs of Ocean Beneath Titan's Crust?
NASA’s Cassini spacecraft has discovered evidence that points to the existence of an underground ocean of water and ammonia on Saturn’s moon Titan. The Cassini science team detail their findings in this week’s Science, explaining that radar mapping of Titan revealed a shift in landmarks on the moon’s surface of up to 30 kilometers between October 2004 and May 2007. The best explanation, they say, is an underground ocean...
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Cassini Flies Through Watery Plumes of Enceladus
NASA’s Cassini spacecraft performed a daring flyby of Saturn’s moon Enceladus on Wed., March 12, flying about 15 kilometers per second (32,000 mph) through icy water geyser-like jets. The spacecraft snatched up precious samples that might point to a water ocean or organics inside the little moon.
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Hydrocarbons on Saturn's Moon Hyperion
NASA’s Cassini spacecraft has revealed for the first time surface details of Saturn’s moon Hyperion, including cup-like craters filled with hydrocarbons that may indicate more widespread presence in our solar system of basic chemicals necessary for life.
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NASA's Cassini Spacecraft Images Seas on Titan
Instruments on NASA’s Cassini spacecraft have found evidence for seas, likely filled with liquid methane or ethane, in the high northern latitudes of Saturn’s moon Titan. One such feature is larger than any of the Great Lakes of North America and is about the same size as several seas on Earth.
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Organic Hazes on Early Earth and Titan
Researchers from NAI’s Unviersity of Colorado, Boulder and University of Arizona Teams have published a new study in PNAS this week about the atmospheres of both present day Titan and early Earth. For Titan, their experiments modeled conditions measured by the Huygens probe from NASA’s Cassini mission, and CO2 was added to model the early Earth conditions. They conclude that organize haze can form over a wide range of methane and carbon dioxide concentrations.
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A Deeper Look into the Watery Plumes of Enceladus
NASA astrobiologists are hard at work examining the nature of the plumes of water vapor recently discovered on Saturn’s moon Enceladus. If a new geological theory about the plumes, published in this week’s Nature, proves to be correct, it would preclude the existence of a subsurface ocean on the moon. The theory is testable with existing data from NASA’s Cassini mission…
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