Project Hail Mary's ending is wrapped up in science and some major surprises, but the movie also adds a scene not in the original book.
Like any book-to-film adaptation, Project Hail Mary makes some changes to its source material.
Project Hail Mary touches down in theaters this weekend, and we're now taking a deep dive into the movie's ending and how things play out for Ryan Gosling's Ryland Grace and his alien co-star, Rocky.
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