Project Hail Mary is a remarkably accurate adaptation, but here are the five biggest changes the movie makes from author Andy Weir's original novel.

Ryan Gosling's "Project Hail Mary" contains a lot of scientific scenes and flashbacks. Here's a breakdown of the movie's most head-scratching moments.

Every effort can be made to ensure maximum faithfulness, but "maximum" is not perfection, and fans of Andy Weir's novel Project Hail Mary will find that to be true in directors Phil Lord and Chris ...