Andy Weir reveals his fun and frantic creative process behind 'Project Hail Mary'
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What is the premise of Project Hail Mary and why does it matter?
Hi, I'm TinBity Ermias, and this is NPR's Book of the Day. By now you've probably heard something about Project Hill Mary. The buzzy film starring Ryan Gosling has already nabbed the honor of having the highest-grossing opening weekend of 2026. But years before the film dominated the box office, it was a best-selling book by writer Andy Weir. In it, the protagonist ends up adrift in space and is tasked with saving humanity. Weir spoke about his inspiration for the novel with here and now host Indira Lakshmanan.
Hey, it's Latif from Radio Lab. Our goal with each episode is to make you think, how did I live this long and not know that? Radio Lab. Adventures on the Edge of What We Think We Know. Listen wherever you get podcasts.
This week on Up First, the Midterms and the Middle East. We're tracking major primary elections in Florida, Alaska, and Wyoming. And abroad, the president's son-in-law Jared Kushner pursues a peace plan in Gaza. Plus, the US-Iran ceasefire hits a crucial 60-day deadline. Stay caught up on the week's biggest stories with Up First. Listen and follow wherever you get your podcasts.
In the new film Project Hail Mary, Ryan Gosling stars as Ryland Grace, a middle school science teacher who wakes up on a ship in deep space with no memory of who he is, where he is, or how he got there. And he's all alone. His two crewmates are dead. As his memories return in a series of flashbacks, Grace realizes he's the only survivor of a desperate Hail Mary mission. A last ditch attempt to save life on Earth. If we do nothing.
Everything on this planet will go extinct,
including
us. Doctor Chris. The world is counting on you.
Hm. Not big stakes there, huh? How can one man save the planet? Project Hail Mary opens in theaters this Friday.
How does Andy Weir explain the science behind the dying Sun and astrophage?
It's based on the best-selling book by Andy Weir, who joins us now. Andy, welcome to Here and Now. Hi, thanks for having me. So, for those who haven't read your science fiction bestseller, let's fill listeners in on the basics of the plot. The power of the sun is being sucked away by microscopic. Life forms called astrophage. If they're not stopped and fast, Earth's temperature will drop so low that it can't sustain life. So Ryland Grace and the rest of the crew are sent eleven light years away in a spaceship called the Hail Mary to investigate astrophage and see if it can be stopped. All right. So I have to ask, where did you get the, let's face it, pretty depressing idea for the story?
Well, it started off with um I wanted to come up with an idea where humanity gets a hold of some sort of mass conversion based fuel. Because if we could do that, we could easily colonize the solar system. There's all these amazing things we could do. And then I was like, Okay, great, but if they find that fuel, then they use it up, then it's gone. How do you make more? And I said, like, well, maybe maybe the fuel itself can make more. You shine light at it, it'll absorb the energy and make more of the fuel. Or something. And then I thought, well, that kind of sounds like life, right? Something that absorbs energy and makes copies of itself. It would have to be like alien, but I'm comfortable with that if it's just a microbe.
But why would it need to store so much energy inside of a little cell? Why would it need to do that? And where would it get that much energy? And those two kind of answered themselves. I'm like, well, it could get that energy by living on the surface of stars. And then maybe it needs that energy. to spore out to infect other stars because it's basically like mold. Oh, and side note in the back of my mind, we'd have to make really sure not to let any of this stuff get onto our sun, because that would be catastrophically bad. And then I'm like, oh wait, no, go back. If that stuff's in our sun, that's the story.
Wow, okay. I think
a weird way I backed into it.
I asked what I thought was a simple question. I got a really complicated answer. I have to say, um, I feel like I just got a view into your uh creative process.
Yes, I always feel like I have to apologize to anyone who sees the inner workings of my mind.
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Chapters
4 chapters
1
What is the premise of Project Hail Mary and why does it matter?
0:02–2:11
2
How does Andy Weir explain the science behind the dying Sun and astrophage?
2:11–5:10
3
What sparked the original “mass‑conversion fuel” idea that became the story’s core?
5:10–9:39
4
Why did Weir choose an ordinary middle‑school teacher as the unlikely hero?
9:39–13:25
Speakers
2 identifiedMore from NPR's Book of the Day
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