Dr. Geoff Marcy
Jul 27, 2011•43 min•Ep. 30
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Episode description
Take a look into the sky tonight and try to imagine how many planets are out there. As of February 2011, there are 1,235 unconfirmed planetary candidates out there. It is widely estimated that there are billions of planets in our galaxy alone. Did you know that one man is responsible for discovering 70 of...
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