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Geoff Marcy

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Geoff Marcy

Latest Planetary Radio Appearance

Planetary Radio 5th Anniversary Show: Astronomer Geoff Marcy on Discovery of Fifth Planet in Star System

November 26, 2007 • 0:28:52

We celebrate our 5th anniversary by learning about discovery of a five-planet star system, the largest found so far. Q&A on Jupiter's red spot.

astronaut on Phobos
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