Project Hail Mary - Weir Andy

"A lone astronaut must save the earth from disaster in this incredible new science-based thriller from the #1 New York Times bestselling author of The Martian.
"A novel that would have delighted Robert A. Heinlein and Isaac Asimov."--George R.R. Martin, author of A Game of Thrones

"Weir's finest work to date . . . the one book I read last year that I am certain I can recommend to anyone, no matter who, and know they'll love it."--Brandon Sanderson, author of the Stormlight Archive series
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.