Cosmos w/ Neil DeGrasse Tyson - Surprising Facts

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    Jun 09, 2014 2:01 AM GMT
    Large Asteroids bombarded Earth

    These events vaporized the oceans and sterilized the planet for thousands of years.

    The Immortals episode
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    Jun 09, 2014 2:02 AM GMT
    A rock from Mars has made it to Earth.
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    Jun 09, 2014 2:04 AM GMT
    Venus, Earth, and Mars exchanged rocks. Microbes survive conditions of space, surviving interplanetary travel.