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.

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

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