Synopsis
Harvard's top astronomer lays out his controversial theory that our solar system was recently visited by advanced alien technology from a distant star.
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About the Author
ABRAHAM (AVI) LOEB is the Frank B. Baird Jr. Professor of Science at Harvard University, where he chairs the astronomy department and directs the Black Hole Initiative. He chairs the Advisory Committee for the Breakthrough Starshot Initiative and the Board on Physics and Astronomy of the National Academies.
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