Planetary Science

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illustration of future mission to Europa

A future mission to Europa, illustrated here, will investigate the moon’s subsurface ocean while orbiting Jupiter and flying by the moon multiple times (blue lines).

Europa

PINCH OF SALT  Colored bands and patches on the surface of Europa might come from irradiated sea salt deposited by a subsurface ocean.

Three boulders (shown) balance precariously on comet 67P/Churyumov-Gerasimenko in this Sept. 16 image taken 29 kilometers above the surface by the Rosetta spacecraft

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