NASA Image Shows the Mayhem That Created Life on Earth [Astronomy]

About 4.1 billion years ago, our solar system was a huge cluster of comets bombarding every planet orbiting the Sun and crashing into each other. That period of chaos is known as the Late Heavy Bombardment, and astronomers believe it was key to the formation of life in our planet. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/4mWKbdpksmU/nasa-image-shows-the-mayhem-that-created-life-on-earth

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