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examines the solar system and NASA explorations in it. Learn about how the solar system formed, what we know about Mars, and the likelihood of earth colliding with an asteroid or comet. (National Aeronautics and Space Administration)
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Sixty-five million years ago, a six-mile-wide asteroid landed on the Yucatan peninsula, causing fires to ignite around the world as debris rained from the sky. Most life on Earth was destroyed, including the dinosaurs. |
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Sedna |
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