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A Timeline Of Comet ISON's Dangerous Journey
A comet's journey through the solar system is perilous and violent. A giant ejection of solar material from the sun could rip its tail off. Before it reaches Mars - at some 230 million miles away fr ... more
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Reports Detail Mars Rover Clues to Atmosphere's Past
A pair of new papers report measurements of the Martian atmosphere's composition by NASA's Curiosity rover, providing evidence about loss of much of Mars' original atmosphere.
Curiosity's Samp ... more
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MAVEN Spectrometer Opens Window to Red Planet's Past
When NASA's MAVEN mission begins its journey to the Red Planet later this year, it will be equipped with a special instrument to take the planet back in time. That instrument is the Neutral Gas and ... more
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How Mars' atmosphere got so thin: New insights from Curiosity
New findings from NASA's Curiosity rover provide clues to how Mars lost its original atmosphere, which scientists believe was much thicker than the one left today.
"The beauty of these measure ... more
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