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.

Project Hail Mary's alien Rocky holds the Ryan Gosling movie together.

Extreme exomoons with tidal heating and thick, hydrogen-rich atmospheres may be able to create billions of years of potentially habitable surface conditions.

As expansive as the sci-fi genre is within cinema, too many great movies are completely forgotten by audiences, like Moon and The Quiet Earth.