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Kepler Discovers First Earth-Sized Planets Outside Solar System - YouTube
https://www.youtube.com/watch?v=kc4PuQ6tzKo
NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called Kepler-20e and Keple...
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Mars In 3-D - YouTube
https://www.youtube.com/watch?v=ubRHSg5daMs
Mars in 3-D is a stereographic film of imagery taken by the NASA Viking 1 and 2 spacecraft from both Mars orbit and on the surface, from both lander location...