496 pages |Paperback

A lone astronaut must save the earth from disaster in this incredible new science-based thriller from the #1New York Timesbestselling author ofThe Martian.

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

Except that right now, he doesnt know that. He cant even remember his own name, let alone the nature of his assignment or how to complete it.

All he knows is that hes been asleep for a very, very long time. And hes 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, he realizes that an impossible task now confronts him. Alone on this tiny ship thats been cobbled together by every government and space agency on the planet and hurled into the depths of space, its up to him to conquer an extinction-level threat to our species.

And thanks to an unexpected ally, he just might have a chance.

Part scientific mystery, part dazzling interstellar journey,Project Hail Maryis a tale of discovery, speculation, and survival to rivalThe Martianwhile taking us to places it never dreamed of going.