Avi Loeb

Abraham "Avi" Loeb (Hebrew: אברהם (אבי) לייב; born February 26, 1962) is an Israeli-American theoretical physicist who works on astrophysics and cosmology. Loeb is the Frank B. Baird Jr. Professor of Science at Harvard University. 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 as the science theory director for the Breakthrough Initiatives of the Breakthrough Prize Foundation. Loeb has published popular science books including Extraterrestrial: The First Sign of Intelligent Life Beyond Earth (2021) and Interstellar: The Search for Extraterrestrial Life and Our Future in the Stars (2023). Since 2017, Loeb has made a series of claims that alien space craft may be in the Solar System. He has argued that ʻOumuamua and other interstellar objects, including the reputedly interstellar meteor CNEOS 2014-01-08, are potential examples of such craft. These claims have been widely rejected by the scientific community. In 2023, he claimed to have recovered spherules formed by the impact of CNEOS 2014-01-08 that he alleged could be evidence of an alien starship, but the location in the ocean where he recovered the spherules was based on mistaking a seismic signal from a truck for the impact of the meteor. Loeb tends to publicize his results before undergoing peer review, contributing to a climate of sensationalism around his claims.