Five places we might find life in our own solar system

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

1. Mars

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    In August 2008, the Phoenix Mars Lander was collecting soil samples on the red planet. This photo from NASA shows its solar panel and robotic arm.
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Early in its history, the red planet had abundant surface water. Could microbes lurk underground?

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