Main News Video Blogs Wide Angles Experts More   facebook share0 Tweet MOONS OF JUPITER: Europa Tracy V. Wilson, HowStuffWorks.com   Europa About two-thirds of the Earth is covered in water, but Europa has about twice as much water as our home planet. Europa's might surface is covered in ice, but astronomers are almost convinced there is an ocean of liquid water underneath -- an environment shielded from Jupiter's intense radiation that might be hospitable to life. A cold, salty planet might not seem like a good place to live, but there are species on Earth that thrive in just those conditions. More on Extreme Life at Credit: NASA/JPL-Caltech/Galileo Article posted February 9, 2009. Got something to say? E-mail your questions, comments or concerns to discoveryspace@discovery.com. MORE SLIDESHOWS Next »10987654321« Previous facebook share0 Tweet stumbleupon share digg share reddit share

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