The Goodreads Readers' Choice Award for Best Science Fiction 2021 goes to Project Hail Mary by Andy Weir.
Engineer-turned-novelist Andy Weir is on a crazy run. Best career switch ever? Project Hail Mary, concerning a resourceful astronaut and an extinction-level event, is Weir's third nomination and his third win. As with his previous books The Martian and Artemis, Project Hail Mary is further evidence that old-school hard science fiction is back. Quantum physics! Chemistry! Exobiology! Aerodynamics! It actually is rocket science.