Project Hail Mary

By Andy Weir

#1 NEW YORK TIMES BESTSELLER • Now a major motion picture starring Ryan Gosling, directed by Phil Lord and Christopher Miller, with a screenplay by Drew Goddard

A lone astronaut must save the earth from disaster in this “propulsive” (Entertainment Weekly), cinematic thriller full of suspense, humor, and fascinating science—from the author of The Martian.

HUGO AWARD FINALIST • NEW YORK TIMES READER PICK: 100 BEST BOOKS OF THE 21ST CENTURY • ONE OF THE YEAR’S BEST BOOKS: Parade, Newsweek, New York Public Library, Polygon, Shelf Awareness, She Reads, Kirkus Reviews, Library Journal

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?

Hailed by USA Today as “an epic story of redemption, discovery, and cool speculative sci-fi,” Project Hail Mary is an irresistible interstellar adventure as only Andy Weir could deliver.

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Published May 4, 2021

Average rating: 8.56

6,388 RATINGS

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Community Reviews

KelBel
Jul 30, 2025
10/10 stars
Yes I gave it a 10!! I loved this book!! I'm a geek but to be honest this was my first sifi book in a very long time. I thought the science to story ratio was perfect! I loved Rocky and Grace's relationship. From learning each other's language both "spoken" and body as well as becoming friends it was all just chef's kiss! The science was pretty cool also. I didn't see that ending coming and glad it was an HEA. I had my doubts for a while there.
Stizstar
Nov 24, 2025
10/10 stars
Amaze!

Project Hail Mary has made my favorites list.

Excellent read!
karen.fahr
Mar 01, 2023
10/10 stars
The best laugh-out-loud, cry-out-loud, and thrilling book I've ever read. It's super entertaining and heartfelt that I still think about it months after reading it. Can't wait to read it again.
Desert rat
May 29, 2026
Reilly's Craft Pizza I loved so much about this book! The story was gripping but there was a bit too much "tech-speak".
Desert rat
May 27, 2026
8/10 stars
I loved this book!! It was techie but I breezed through all that. The science was believable enough to make a great story.

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