Having read the book, this really makes me wonder how they’ve filmed the climax 🤪

(I assume they’ve used an LED volume, which often looks worse than green screen imo - ref: Ant-Man Quantumania)

Looking forward to the movie though!

‘Project Hail Mary’ Contains Not a Single Green Screen Shot in Entire Movie, Director Says

Amazon-MGM's entire 156-minute, big-budget sci-fi gamble was shot without any green (or blue) screen, Christopher Miller says.

The Hollywood Reporter