Olowin Physics & Astronomy Lecture: Javier Barbuzano Presents The Moon Mess

Date & Time:
Thursday, February 21, 2019 -
3 p.m. to 4:30 p.m.
Saint Mary's College, Galileo Hall Room 201, 1928 Saint Mary's Road, Moraga, CA 94575
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The Department of Physics & Astronomy in collaboration with Caminos a Las Ciencias and the Department of Communication will host Sky & Telescope journalist Javier Barbuzano for the Olowin Physics & Astronomy lecture: The Moon Mess. In the most widely accepted theory of the formation of Earth's Moon, about 4½ billion years ago, a Mars-sized body and the proto-Earth — both with atmospheres, and, likely surface oceans — crashed into each other. Already scarred by earlier, smaller impacts, the two bodies largely vaporized. The Moon and Earth coalesced out of the debris. But in the decades since the last Apollo mission, evidence has mounted that the Earth and Moon are made of the exact same stuff. If a planet-scale smash created the Moon, how did it end up so like the Earth?