• The Washington Post

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The search for life in the solar system took a twist Thursday with the announcement that Europa, a moon of Jupiter first discovered by Galileo, shows signs of water geysers erupting from its south pole.

This could be the best evidence yet that Europa has a subsurface ocean. With liquid water and energy from the moon’s internal tidal forces, Europa could fit the scientific definition of a habitable world, a place where life could exist, dark and chilly though that existence might be.

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