Project Hail Mary

Astronaut Ryland Grace wakes up on a space station with no recollection of who he is or what his mission is. As his memory slowly returns, he soon learns that he was sent to the Tau Ceti solar system to reverse the impact of a space event that has already hurled Earth into the early stages of an ice age. As details of the mission unravel, he must call on his scientific training and sheer ingenuity, but he may not have to do it alone.