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Avi Loeb
Education & Learning
Avi Loeb is an Israeli-American theoretical physicist at Harvard University whose work spans astrophysics, cosmology, and controversial proposals about extraterrestrial technology.
Biography
Abraham “Avi” Loeb is an Israeli-American theoretical physicist born in 1962 who works on astrophysics and cosmology. He is the Frank B. Baird Jr. Professor of Science at Harvard University, where he chaired the Department of Astronomy from 2011 to 2020 and founded the Black Hole Initiative in 2016.
Loeb is a fellow of the American Academy of Arts and Sciences, the American Physical Society, and the International Academy of Astronautics. In 2015, he was appointed science theory director for the Breakthrough Initiatives. His popular science books include Extraterrestrial (2021) and Interstellar (2023). He has proposed that ʻOumuamua and other objects could represent alien technology, claims that have been widely rejected by the scientific community.
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Books by Avi Loeb

Extraterrestrial
Extraterrestrial: The First Sign of Intelligent Life Beyond Earth (2021) presents Loeb’s controversial theory that the interstellar object ʻOumuamua was advanced alien technology. The book explores the proposed implications for science, religion, and the future of humanity and Earth.