Extraterrestrial Audiobook By Avi Loeb cover art

Extraterrestrial

The First Sign of Intelligent Life Beyond Earth

Preview
Get this deal Try for $0.00
Offer ends January 21, 2026 11:59pm PT
Prime logo Prime members: New to Audible? Get 2 free audiobooks during trial.
Just $0.99/mo for your first 3 months of Audible Premium Plus.
1 audiobook per month of your choice from our unparalleled catalog.
Listen all you want to thousands of included audiobooks, podcasts, and Originals.
Auto-renews at $14.95/mo after 3 months. Cancel anytime.
Pick 1 audiobook a month from our unmatched collection.
Listen all you want to thousands of included audiobooks, Originals, and podcasts.
Access exclusive sales and deals.
Premium Plus auto-renews for $14.95/mo after 30 days. Cancel anytime.

Extraterrestrial

By: Avi Loeb
Narrated by: Robert Petkoff
Get this deal Try for $0.00

$14.95/mo after 3 months. Cancel anytime. Offer ends January 21, 2026 11:59pm PT.

$14.95/month after 30 days. Cancel anytime.

Buy for $19.79

Buy for $19.79

LIMITED TIME OFFER | Get 3 months for $0.99 a month

$14.95/mo thereafter-terms apply.

New York Times Bestseller | Wall Street Journal Bestseller | Publishers Weekly Bestseller | Publishers Marketplace 2020 Buzz Book | Amazon Best Book of the Year | Longlisted for the 2022 PEN/E.O. Wilson Literary Science Writing Award


“Provocative and thrilling ... Loeb asks us to think big and to expect the unexpected.”

—Alan Lightman, New York Times bestselling author of Einstein’s Dreams and Searching for Stars on an Island in Maine


Harvard’s top astronomer lays out his controversial theory that our solar system was recently visited by advanced alien technology from a distant star.


In late 2017, scientists at a Hawaiian observatory glimpsed an object soaring through our inner solar system, moving so quickly that it could only have come from another star. Avi Loeb, Harvard’s top astronomer, showed it was not an asteroid; it was moving too fast along a strange orbit, and left no trail of gas or debris in its wake. There was only one conceivable explanation: the object was a piece of advanced technology created by a distant alien civilization.

In Extraterrestrial, Loeb takes readers inside the thrilling story of the first interstellar visitor to be spotted in our solar system. He outlines his controversial theory and its profound implications: for science, for religion, and for the future of our species and our planet. A mind-bending journey through the furthest 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.

Aeronautics & Astronautics Astronomy Astronomy & Space Science Philosophy Physics Science Thought-Provoking

Featured Article: The best audiobooks about aliens for curious humans


Throughout the history of storytelling, we humans have been curious about the possibility of worlds beyond Earth and its inhabitants. Thanks to our endless fascination with extraterrestrial life, there is a mountain of literature, from novels to memoirs, exploring the potential outcomes of interacting with creatures from other planets. Without further ado, here are 20 of our favorite listens about alien life.

Scientific Evidence • Thought-provoking Analysis • Excellent Narration • Compelling Arguments • Accessible Explanations

Highly rated for:

All stars
Most relevant
An easy essay for those with even the most casual interest in science and astronomy.

1 part science, 1 part philosophy with a dash of dreams. Avi lays out not only the possibility of object "1I/2017 U1" aka "Omuamua" being of extraterrestrial origin, but also the dangers and pitfalls of science dismissing it as "not exceptional" beyond having traveled from outside our solar system. He deliberates, at some length how, if the scientific community would dare to look beyond common, accepted answers, new and exciting discoveries could lay within our reach.

Loved it!

Something went wrong. Please try again in a few minutes.

Loeb's book shows the narrow minded arrogance of Quackademeia and how paradigm changes based on evidence have become the new heresy. Science ( by that they mean scientists) should be viewed by the ignorant masses as infallible and all their opinions and beliefs gospel.

scientific priesthood as bad as religion

Something went wrong. Please try again in a few minutes.

Even though the main theory of this book has recently been debunked, it’s still amusing to follow his thinking and exploration methods. Couldn’t stop listening!

Interesting line of thought

Something went wrong. Please try again in a few minutes.

So glad I listened to this book. There is always so much chatter about Omuamua that it’s hard to sort out good information. It really changed my perspective.

Very informative and thought provoking

Something went wrong. Please try again in a few minutes.

I stopped at the aforementioned chapter to write this review.
One-two combo science and philosophy will knock you into seing the long view of the universe and humanity's place in it.
It is my fondest wish that the determination and hopefulnes of the ideas in this book go viral and stay with us for generations to come, not a good analogy I know, much like some in the book.

If you like Carl Sagan you will love Avi Loeb.
I say yes to looking for alien space junk, yes to a space renaissance lets do it!

Chapter 9 made my head explode

Something went wrong. Please try again in a few minutes.

See more reviews