Peter Schultz is a research professor of Earth, environment and planetary science and professor emeritus of geological sciences at Brown University in Providence, Rhode Island.
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12:43
Searching for Signs of Life in Asteroid Impacts
Geologist Peter Schultz uses a high-velocity gun to test his hypothesis that asteroid impacts could preserve signs of ancient life.
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6:56
Mercury: The Ashtray of the Solar System?
Scientists say that dust from passing comets could have darkened the surface of Mercury.