This is a summary book based on Avi Loeb’s original work. Loeb’s book was longlisted for the 2022 PEN/E.O. Wilson Literary Science Writing Award. Provocative and thrilling… Loeb asks us to think big and expect the unexpected. New York Times Bestseller | Wall Street Journal Bestseller | Publishers Weekly Bestseller | Publishers Marketplace 2020 Buzz Book | Amazon Best Book of the YearHarvard’s top astronomer explains why he believes our solar system was recently visited by sophisticated extraterrestrial technology from a faraway star.Scientists at a Hawaiian observatory saw an object, ‘Oumuamua, flying through our inner solar system in late 2017, and it was travelling so fast that it could only have originated from another star. It wasn’t an asteroid, according to Harvard’s top astronomer Avi Loeb, since it was travelling too rapidly along a peculiar orbit and leaving no trail of gas or debris in its wake. The item could only be a piece of sophisticated technology manufactured by a distant extraterrestrial civilisation, according to one theory.Loeb takes readers inside the amazing tale of Oumuamua, the first interstellar visitor to be discovered in our solar system, in Extraterrestrial. He lays out his controversial thesis and its far-reaching ramifications for science, religion, and the destiny of our species and planet. Extraterrestrial is a mind-bending trip across the furthest limits of science, space-time, and the human imagination, challenging readers to strive for the stars—and to think critically about what’s out there, no matter how bizarre it may seem.