$1.99 as of June 9, 2025
Click for current price: Amazon US
(Full-price: Amazon Canada, United Kingdom, Germany, Australia Apple, B&N, Kobo, GooglePlay)

HUGO AWARD FINALIST • ONE OF THE YEAR’S BEST BOOKS: New York Public Library, Parade, Newsweek, Polygon, Shelf Awareness, She Reads, Kirkus Reviews, Library Journal • New York Times Readers Pick: 100 Best Books of the 21st Century

“An epic story of redemption, discovery and cool speculative sci-fi.”—USA Today

“If you loved The Martian, you’ll go crazy for Weir’s latest.”—The Washington Post

Ryland Grace is the sole survivor on a desperate, last-chance mission—and if he fails, humanity and the earth itself will perish.

Except that right now, he doesn’t know that. He can’t even remember his own name, let alone the nature of his assignment or how to complete it.

All he knows is that he’s been asleep for a very, very long time. And he’s just been awakened to find himself millions of miles from home, with nothing but two corpses for company.

His crewmates dead, his memories fuzzily returning, Ryland realizes that an impossible task now confronts him. Hurtling through space on this tiny ship, it’s up to him to puzzle out an impossible scientific mystery—and conquer an extinction-level threat to our species.

And with the clock ticking down and the nearest human being light-years away, he’s got to do it all alone.

Or does he?

An irresistible interstellar adventure as only Andy Weir could deliver, Project Hail Mary is a tale of discovery, speculation, and survival to rival The Martian—while taking us to places it never dreamed of going.