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Planetary Science

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Mars

DUSTUP A dust storm (right) captured by the Mars Global Surveyor in 2001 swirls over much of the Red Planet. These storms are helping hydrogen from water vapor escape from the Red Planet, a new study finds.

Mars ice

LOOK OUT BELOW  Erosion is revealing vast ice deposits in cliffs on Mars. The ice (white streaks in this image from NASA’s Mars Reconnaissance Orbiter) is buried under just a meter or two of soil, meaning it could be relatively easy to access on future missions.

illustration of Jupiter and Europa

LITTLE MOON, BIG WORLD  Watching the tiny ice moon Europa cross in front of Jupiter helped astronomers reveal Europa’s watery plumes. This artist’s impression superimposes real visible images of Jupiter and Europa with ultraviolet data from the Hubble Space Telescope showing the plumes (blue).

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