Extraterrestrial

The book centers on 'Oumuamua, the first interstellar object ever detected passing through our solar system. Its unusual trajectory and characteristics led some scientists, including the author, to propose it might be artificial rather than a natural comet or asteroid.

Avi Loeb's book is a personal account of his scientific journey and arguments for the extraterrestrial hypothesis regarding 'Oumuamua. While he addresses counterarguments, the book primarily advocates for his controversial perspective.