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panspermia

The Case Strengthens That Humans Actually Are from a Distant Planet

Life on Earth might actually be Martian — or Europan, or Titanese. Or maybe our ancestors came from outside our solar system, flung up from a distant planet (perhaps Caprica?) billions of years ago and migrated to Earth. It all sounds far-fetched, but new research suggests microbes can survive an asteroid impact big enough so send them into space, making panspermia — the idea that we're all really aliens at heart — a real possibility. More »

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Satellite Smackdown -- Which Moon is the Solar System's Awesomest?

A little while back, io9er Ed said Titan was "The Awesomest Moon in the Solar System." Well where I come from, them's fightin' words. What about Earth's Moon? Mars' Phobos? Europa?? There are boatloads of kickass moons in the solar system. We break down ten contenders in a highly scientific chart to settle this debate, once and for all. More »

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Dawn in the Oort Cloud

If you're wondering about the sunny view from the Oort Cloud, that vast sphere of debris that surrounds our solar system, here it is. As we told you yesterday, scientists now believe this remote, cold region might house another Earth-like planet. Only it would be frozen. Want to travel a little closer to the sun, and watch Jupiter rising over its frozen moon Europa? More »