Five places we might find life in our own solar system

Life on Earth occupies some bizarre places – pools of pitch, deep-sea hydrothermal vents, and lightless lakes buried under glaciers. While scientists hunt for hospitable planets circling other stars, the solar system has a few candidates. Here are five.

2. Europa/Ganymede

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    This 2002 composite shows the edge of Jupiter, with its Great Red Spot, and Jupiter's four largest moons, known as the Galilean satellites. From top to bottom, the moons shown here are Io, Europa, Ganymede, and Callisto.
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With rocky cores heated by tugs from Jupiter, these moons are thought to have potentially life-supporting seas beneath their icy crusts.

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