Project Hail Mary Trivia | Book & Movie Quiz Guide

Think you know everything about Ryland Grace, Rocky, and humanity's last-ditch mission to save the sun? Whether you devoured Andy Weir's bestselling novel or you're gearing up for the 2026 film starring Ryan Gosling, this guide will test and expand your Project Hail Mary knowledge.

About the Story

Project Hail Mary follows Ryland Grace, a middle-school science teacher who wakes up alone on a spaceship with no memory of how he got there. He gradually discovers he's been sent on a one-way mission to the Tau Ceti star system to find a solution to Astrophage — an alien microorganism that is slowly dimming Earth's sun and threatening all life on the planet.

The story blends hard science with heart, humor, and one of the most memorable interspecies friendships in science fiction. Grace's relationship with Rocky, a spider-like alien engineer from the planet Erid, is the emotional core of the novel.

Key Facts to Know

The Science

Astrophage is an alien microorganism that feeds on stellar energy, causing stars to dim

The only nearby star unaffected by Astrophage is Tau Ceti, making it the mission's destination

Rocky's home planet Erid has an extreme ammonia-based atmosphere at crushing pressures

The Hail Mary ship is powered by Astrophage itself — using the organism's energy-storage properties

The Characters

Ryland Grace — A former molecular biologist turned science teacher, reluctantly recruited for the mission

Eva Stratt — The ruthless international project leader who assembled the mission with near-unlimited authority

Rocky — An Eridian engineer who communicates through musical tones and chords

Yáo and Ilyukhina — Grace's crewmates who didn't survive the medically induced coma

From Page to Screen

Andy Weir published the novel in May 2021, and film rights were snapped up before the book even hit shelves. The 2026 adaptation is directed by Phil Lord and Christopher Miller and stars Ryan Gosling as Grace. Fans of The Martian will recognize Weir's signature blend of science, survival, and humor.

Test Your Knowledge

Ready to put your Project Hail Mary expertise to the test?

Take the Project Hail Mary Trivia Quiz

Our 12-question quiz covers the novel's plot, characters, science concepts, and the 2026 film adaptation. It's perfect for book club prep, movie night warm-ups, or just proving you're the biggest Andy Weir fan in the room.

Why This Story Resonates

Project Hail Mary isn't just another sci-fi survival story. At its core, it's about:

Unlikely friendship — Grace and Rocky prove that connection transcends biology, language, and even planet of origin

The power of science — The story celebrates curiosity, problem-solving, and the scientific method

Sacrifice and purpose — Grace goes from reluctant participant to willing hero

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