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“Exploration is in our nature.” - Carl Sagan

Geoff Marcy

Professional planet hunter, University of California, Berkeley

Latest Planetary Radio Appearances

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

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.

Billions of Earths?

Billions of Earths?

Hunting for Extrasolar Planets

Hunting for Extrasolar Planets

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