In late 2017, scientists glimpsed an object soaring through our inner solar system, moving so quickly that it could only have come from another star. Avi Loeb showed it was not an asteroid. There was only one conceivable explanation: the object was a piece of advanced technology created by a distant alien civilization. A mind-bending journey through the farthest reaches of science, space-time, and the human imagination, Extraterrestrial challenges readers to aim for the stars--and to think critically about what's out there, no matter how strange it seems.
