Project Hail Mary is a 2021 science-fiction novel by Andy Weir. It is his third novel, after 2011's The Martian, and 2017's Artemis. Set in the near future, the novel centers on middle school-teacher-turned-astronaut Ryland Grace, who wakes up from a coma, afflicted with amnesia. He gradually remembers that he was sent to the Tau Ceti solar system, 12 light-years from Earth, to find a means of reversing a solar dimming event that could cause the extinction of humanity.