Astronomy Picture of Day: Gullies on Mars# Astronomy - 天文
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Gullies on Mars
Credit: Malin Space Science Systems, MGS, JPL, NASA
Explanation: The Gullies of Mars would probably not have been sensational enough for the
title of a vintage Edgar Rice Burroughs story about the Red Planet. But it would get the
attention of planetary scientists today. First identified in high resolution images of Mars
recorded by the orbiting Mars Global Surveyor spacecraft, the gullies are interpreted as
startling evidence that liquid water flowed across the martia
Credit: Malin Space Science Systems, MGS, JPL, NASA
Explanation: The Gullies of Mars would probably not have been sensational enough for the
title of a vintage Edgar Rice Burroughs story about the Red Planet. But it would get the
attention of planetary scientists today. First identified in high resolution images of Mars
recorded by the orbiting Mars Global Surveyor spacecraft, the gullies are interpreted as
startling evidence that liquid water flowed across the martia