Phil Lord and Christopher Miller’s science-fiction thriller *Project Hail Mary***sticks surprisingly close to the book it’s adapting, a thriller about a lone astronaut trying to save Earth from apocalypse. But the novel of the same name, written by *The Martian* author Andy Weir, does have some wrinkles that inevitably had to be left out of the movie. Weir and screenwriter Drew Goddard tell Polygon that they only really miss one of them.