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Project Hail Mary: A Novel Paperback – Large Print, May 11, 2021
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HUGO AWARD FINALIST • ONE OF THE YEAR’S BEST BOOKS: Bill Gates, GatesNotes, New York Public Library, Parade, Newsweek, Polygon, Shelf Awareness, She Reads, Kirkus Reviews, Library Journal • “An epic story of redemption, discovery and cool speculative sci-fi.”—USA Today
“If you loved The Martian, you’ll go crazy for Weir’s latest.”—The Washington Post
Ryland Grace is the sole survivor on a desperate, last-chance mission—and if he fails, humanity and the earth itself will perish.
Except that right now, he doesn’t know that. He can’t even remember his own name, let alone the nature of his assignment or how to complete it.
All he knows is that he’s been asleep for a very, very long time. And he’s just been awakened to find himself millions of miles from home, with nothing but two corpses for company.
His crewmates dead, his memories fuzzily returning, Ryland realizes that an impossible task now confronts him. Hurtling through space on this tiny ship, it’s up to him to puzzle out an impossible scientific mystery—and conquer an extinction-level threat to our species.
And with the clock ticking down and the nearest human being light-years away, he’s got to do it all alone.
Or does he?
An irresistible interstellar adventure as only Andy Weir could deliver, Project Hail Mary is a tale of discovery, speculation, and survival to rival The Martian—while taking us to places it never dreamed of going.
- Print length688 pages
- LanguageEnglish
- PublisherRandom House Large Print
- Publication dateMay 11, 2021
- Dimensions6.14 x 1.13 x 9.22 inches
- ISBN-100593395565
- ISBN-13978-0593395561
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Editorial Reviews
Amazon.com Review
Review
“An engaging space odyssey.”—The New York Times Book Review (Editors’ Choice)
“Dazzling.”—Vulture
“Funny, well plotted, and full of surprises.”—The Guardian
“A joy to read.”—Locus
“The ultimate page-turner.”—Daily Mail
“Weir spins a space yarn in a way only he can. Fans of his earlier works won’t be disappointed.”—Newsweek
“Andy Weir proves once again that he is a singular talent. Project Hail Mary is so fascinating and propulsive that it’s downright addictive. From the first page as Ryland wakes up not knowing who or where he is, I was hooked.”—Taylor Jenkins Reid, New York Times bestselling author of Daisy Jones & The Six
“Reading Project Hail Mary is like going on a field trip to outer space with the best science teacher you’ve ever had—and your class assignment is to save the world. This is one of the most original, compelling, and fun voyages I’ve ever taken.”—Ernest Cline, #1 New York Times bestselling author of Ready Player One
“Two worlds in peril, a competent (but flawed and human) man, a competent alien, unending scientific puzzles to unravel, with humanity itself at risk, this one has everything fans of old school SF (like me) love. If you like a lot of science in your science fiction, Andy Weir is the writer for you.”—George R. R. Martin, New York Times bestselling author of A Game of Thrones
“I loved The Martian, but I actually find Project Hail Mary to be Mr. Weir’s finest work to date. It’s somehow both exciting, yet also personal. I’m constantly amazed by how well Mr. Weir continues to write wonderfully accessible science fiction without compromising either the science or the fiction.”—Brandon Sanderson, New York Times bestselling author of the Stormlight Archive series
“Brilliantly funny and enjoyable . . . one of the most plausible science fiction books I’ve ever read.”—Tim Peake, ESA astronaut and internationally bestselling author of Limitless
“Thrilling doesn’t even begin to describe Project Hail Mary, which is undisputedly the best book I’ve read in a very, very long time . . . I cheered, I laughed (a lot), I cried, and when the twist arrived and the book revealed its true target, my jaw hit the floor. Mark my words: Project Hail Mary is destined to become a classic.”—Blake Crouch, New York Times bestselling author of Recursion and Dark Matter
“Readers may find themselves consuming this emotionally intense and thematically profound novel in one stay-up-all-night-until-your-eyes-bleed sitting. An unforgettable story of survival and the power of friendship—nothing short of a science fiction masterwork.”—Kirkus Reviews (starred review)
About the Author
Excerpt. © Reprinted by permission. All rights reserved.
“What’s two plus two?”
Something about the question irritates me. I’m tired. I drift back to sleep.
A few minutes pass, then I hear it again.
“What’s two plus two?”
The soft, feminine voice lacks emotion and the pronunciation is identical to the previous time she said it. It’s a computer. A computer is hassling me. I’m even more irritated now.
“Lrmln,” I say. I’m surprised. I meant to say “Leave me alone”—a completely reasonable response in my opinion—but I failed to speak.
“Incorrect,” says the computer. “What’s two plus two?”
Time for an experiment. I’ll try to say hello.
“Hlllch?” I say.
“Incorrect. What’s two plus two?”
What’s going on? I want to find out, but I don’t have much to work with. I can’t see. I can’t hear anything other than the computer. I can’t even feel. No, that’s not true. I feel something. I’m lying down. I’m on something soft. A bed.
I think my eyes are closed. That’s not so bad. All I have to do is open them. I try, but nothing happens.
Why can’t I open my eyes?
Open.
Aaaand . . . open!
Open, dang it!
Ooh! I felt a wiggle that time. My eyelids moved. I felt it.
Open!
My eyelids creep up and blinding light sears my retinas.
“Glunn!” I say. I keep my eyes open with sheer force of will. Everything is white with shades of pain.
“Eye movement detected,” my tormenter says. “What’s two plus two?”
The whiteness lessens. My eyes are adjusting. I start to see shapes, but nothing sensible yet. Let’s see . . . can I move my hands? No.
Feet? Also no.
But I can move my mouth, right? I’ve been saying stuff. Not stuff that makes sense, but it’s something.
“Fffr.”
“Incorrect. What’s two plus two?”
The shapes start to make sense. I’m in a bed. It’s kind of . . . oval-shaped.
LED lights shine down on me. Cameras in the ceiling watch my every move. Creepy though that is, I’m much more concerned about the robot arms.
The two brushed-steel armatures hang from the ceiling. Each has an assortment of disturbingly penetration-looking tools where hands should be. Can’t say I like the look of that.
“Ffff . . . oooh . . . rrrr,” I say. Will that do?
“Incorrect. What’s two plus two?”
Dang it. I summon all my willpower and inner strength. Also, I’m starting to panic a little. Good. I use that too.
“Fffoouurr,” I finally say.
“Correct.”
Thank God. I can talk. Sort of.
I breathe a sigh of relief. Wait—I just controlled my breathing. I take another breath. On purpose. My mouth is sore. My throat is sore. But it’s my soreness. I have control.
I’m wearing a breathing mask. It’s tight to my face and connected to a hose that goes behind my head.
Can I get up?
No. But I can move my head a little. I look down at my body. I’m naked and connected to more tubes than I can count. There’s one in each arm, one in each leg, one in my “gentlemen’s equipment,” and two that disappear under my thigh. I’m guessing one of them is up where the sun doesn’t shine.
That can’t be good.
Also, I’m covered with electrodes. The sensor-type stickers like for an EKG, but they’re all over the place. Well, at least they’re only on my skin instead of jammed into me.
“Wh—” I wheeze. I try again. “Where . . . am . . . I?”
“What’s the cube root of eight?” the computer asks.
“Where am I?” I say again. This time it’s easier.
“Incorrect. What’s the cube root of eight?”
I take a deep breath and speak slowly. “Two times e to the two-i-pi over three.”
“Incorrect. What’s the cube root of eight?”
But I wasn’t incorrect. I just wanted to see how smart the computer was. Answer: not very.
“Two,” I say.
“Correct.”
I listen for follow-up questions, but the computer seems satisfied.
I’m tired. I drift off to sleep again.
I wake up. How long was I out? It must have been a while because I feel rested. I open my eyes without any effort. That’s progress.
I try to move my fingers. They wiggle as instructed. All right. Now we’re getting somewhere.
“Hand movement detected,” says the computer. “Remain still.”
“What? Why—”
The robot arms come for me. They move fast. Before I know it, they’ve removed most of the tubes from my body. I didn’t feel a thing. Though my skin is kind of numb anyway.
Only three tubes remain: an IV in my arm, a tube up my butt, and a catheter. Those latter two are kind of the signature items I wanted removed, but okay.
I raise my right arm and let it fall back to the bed. I do the same for my left. They feel heavy as heck. I repeat the process a few times. My arms are muscular. That doesn’t make sense. I assume I’ve had some massive medical problem and been in this bed for a while. Otherwise, why would they have me hooked up to all the stuff? Shouldn’t there be muscle atrophy?
And shouldn’t there be doctors? Or maybe the sounds of a hospital? And what’s with this bed? It’s not a rectangle, it’s an oval and I think it’s mounted to the wall instead of the floor.
“Take . . .” I trail off. Still kind of tired. “Take the tubes out. . . .”
The computer doesn’t respond.
I do a few more arm lifts. I wiggle my toes. I’m definitely getting better.
I tilt my ankles back and forth. They’re working. I raise my knees up. My legs are well toned too. Not bodybuilder thick, but still too healthy for someone on the verge of death. I’m not sure how thick they should be, though.
I press my palms to the bed and push. My torso rises. I’m actually getting up! It takes all my strength but I soldier on. The bed rocks gently as I move. It’s not a normal bed, that’s for sure. As I raise my head higher up, I see the head and foot of the elliptical bed are attached to strong-looking wall mounts. It’s kind of a rigid hammock. Weird.
Soon, I’m sitting on my butt tube. Not the most comfortable sensation, but when is a tube up your butt ever comfortable?
I have a better view of things now. This is no ordinary hospital room. The walls look plastic and the whole room is round. Stark-white light comes from ceiling-mounted LED lights.
There are two more hammock-like beds mounted to the walls, each with their own patient. We are arranged in a triangle and the roof-mounted Arms of Harassment are in the center of the ceiling. I guess they take care of all three of us. I can’t see much of my compatriots—they’ve sunken into their bedding like I had.
There’s no door. Just a ladder on the wall leading to . . . a hatch? It’s round and has a wheel-handle in the center. Yeah, it’s got to be some kind of hatch. Like on a submarine. Maybe the three of us have a contagious disease? Maybe this is an airtight quarantine room? There are small vents here and there on the wall and I feel a little airflow. It could be a controlled environment.
I slide one leg off over the edge of my bed, which makes it wobble. The robot arms rush toward me. I flinch, but they stop short and hover nearby. I think they’re ready to grab me if I fall.
“Full-body motion detected,” the computer says. “What’s your name?”
“Pfft, seriously?” I ask.
“Incorrect. Attempt number two: What’s your name?”
I open my mouth to answer.
“Uh . . .”
“Incorrect. Attempt number three: What’s your name?”
Only now does it occur to me: I don’t know who I am. I don’t know what I do. I don’t remember anything at all.
“Um,” I say.
“Incorrect.”
A wave of fatigue grips me. It’s kind of pleasant, actually. The computer must have sedated me through the IV line.
“. . . waaaait . . .” I mumble.
The robot arms lay me gently back down to the bed.
Product details
- Publisher : Random House Large Print; Large type / Large print edition (May 11, 2021)
- Language : English
- Paperback : 688 pages
- ISBN-10 : 0593395565
- ISBN-13 : 978-0593395561
- Item Weight : 1.4 pounds
- Dimensions : 6.14 x 1.13 x 9.22 inches
- Best Sellers Rank: #344,505 in Books (See Top 100 in Books)
- #1,777 in Hard Science Fiction (Books)
- #8,718 in Science Fiction Adventures
- #22,485 in Suspense Thrillers
- Customer Reviews:
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About the author

ANDY WEIR built a two-decade career as a software engineer until the success of his first published novel, The Martian, allowed him to live out his dream of writing full-time.
He is a lifelong space nerd and a devoted hobbyist of such subjects as relativistic physics, orbital mechanics, and the history of manned spaceflight. He also mixes a mean cocktail.
He lives in California.
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With that said, I was REALLY looking forward to Artemis. It was good...but, it was certainly not in the same caliber as The Martian was (at least not for me). I enjoyed it a lot, however and appreciated how author Andy Weir chose to go in a completely different direction and not just rehash another similar story, which I am certain would have been great as well.
As a result, I was cautious regarding Project Hail Mary. It sounded a little too close to The Martian, but yet, also different in that the circumstances simply could not be more opposite and the stakes so much higher. I'm trying to figure out the best way to summarize without giving too much away from this utterly compelling novel. As I read several reviews, I noticed a recurring theme: SCIENCE. Lots and LOTS of science. Holy cow, they were right. Many years ago I read Apollo 13 and Jim Lovell and his co-writer, try as they might, simply could not dumb down Orbital Mechanics anywhere near enough for me to have even a minor clue as to what they were attempting to say...I just skipped 90% of it and hoped that the sentences written afterwards, would help to make sense of what I had just skimmed over. I'm a lot of things, but a math wizard is definitely not one of them. Michael Crichton (Jurassic Park) had an amazing talent for dumbing-down the science of what he was trying to explain in ways that genuinely made sense (most of the time). Not everyone has this talent, and I would say Andy Weir falls squarely in between. He's certainly better than Jim Lovell, but not quite as good as Crichton. But then again, outside of a science textbook, I haven't really read anything with quite as MUCH science as Project Hail Mary. So maybe he's just as good, but he just puts more science into his books than Crichton, maybe that's it...? Either way, be prepared for a lot of astonishingly interesting science within the pages of this novel...and I DO mean a LOT. I don't say this to make you wary or steer you away...on the contrary, Andy Weir has a special talent for making hard science truly entertaining.
The book opens with an absolutely amazing and frightening premise: an astronaut awakes from an induced coma to find the only other two people on board have died at some point along their journey...but it gets worse. He has no idea who he is, or why he's on the ship, and oh yeah, they look to be a long way from home. A really, REALLY long way from home. In fact, the sun he sees isn't actually OUR sun at all. He's managed to leave our solar system entirely. And he has no idea why.
((Minor Spoilers)) The book goes through some clever flash-backs, which set the stage for why the mission happens, and slowly, carefully explains how they managed to get so far away from earth in such a short amount of time. Basically, earth's sun seems to be dying. At the rate of decay, we have maybe 19 years left before the gradual cooling has catastrophic consequences resulting in the death of billions (best guess). Why the sun is dimming is quite the conundrum in the first place. Turns out it really isn't dying, it's being killed by an outside source...which turns out to be easily the greatest find in history. It's alien life, and they are using the sun for food, essentially. It's alien life, but not intelligent life. But still, wow! ALIENS, right???
After this monumental discovery, and some tremendous research done by the most improbable scientist, the investigation into what is happening and why and what to do about it expands exponentially to other nations in order to pool all the resources possible to hopefully save the sun, and by extension, the human race as well. They learn. A LOT. A plan is put together, and with the help of the newly discovered microscopic alien life, which can also double as a power source (along with a few other nifty surprises), they begin to create one last, Hail Mary that could very well be the last chance we might have to save earth. It's audacious. It's dangerous, and it is absolutely critical that it succeed.
As our astronaut's memory slowly unravels, so does his identity: Ryland Grace. He's a teacher on earth. Just a science teacher. Not even a college professor. He's amazingly smart, though. But he's no astronaut...and certainly not one who would volunteer to go on a one-way mission to another solar system to "try" and save humanity. Yet here he is. Alone. light years from earth, trying to solve the biggest riddle in all of human history. Ryland accepts his situation, such as it is, with relative indifference (for the most part). It doesn't matter HOW he got here. He's here now and he may as well use that time to be as productive as possible, right? Along the way, he unravels even more information regarding the microscopic alien life which is slowly dimming our sun during some additional flashbacks. The aliens, dubbed, "Astrophage" are quite the galactic plague as it turns out. Stars all over the galaxy are also losing their light, all due to the little buggers. All that is, except one particular star named, Tau Ceti. Now why would that one star be unaffected by Astrophage, when every single star around it has been affected to some degree. The plan is to go there and figure it out and send the information back, hopefully in time to save the sun before the damage to earth is beyond repair.
There is an incredible amount of stuff going on. The story switches from Tau Ceti to flashbacks of how the whole mission was planned and implemented (which is VERY entertaining, especially Director Stratt, who may actually be my favorite character in the entire novel). Weir is becoming quite adept at building tension, and abruptly switching the story from Tau Ceti back to earth and building more of the backstory then switching back to Tau Ceti. Keeping it all in check and most importantly, interesting all while mixing in a healthy dose of science, which I am to understand is pretty much all genuine, is quite the juggling act. I have long known science can be astronomically entertaining (see what I did there?) when done right...but unfortunately very few people in a position to teach science actually know the best way to create that interest in others. I can say without reservation, Andy Weir definitely knows how to do it...at least in written form.
There is so much I want to say more regarding this truly phenomenal story, but I simply cannot without ruining a lot of the fun and surprises revealed along the way...and it is killing me to keep it locked in. Though I labeled a spoiler warning earlier, I don't think it gave away any more than what the author himself has revealed in interviews he has done regarding the book, and what you can glean from reading the summary here and just a couple other reviews. Tying all of that science together is truly astonishing to me. The creativity to put it into a novel that is remarkably exciting to read is nothing more than incredible talent. Kudo's to Andy Weir for not just hitting a home run, Project Hail Mary is a Grand Slam all the way. I truly did not want this story to end. By the way, I enjoyed the ending quite a bit. I don't know if everyone will. But it was fine for me. I think the ending screams "sequel" at some point too. A lot was left open-ended (IMO) and I wouldn't mind reading a follow-up to this. It doesn't HAVE to happen, but there are a lot of ways where the story could go if Andy chose to do it. Just sayin'.
Just run out and buy this book.
Now that I have finished I have to say I am astounded by some of the negative reviews discussing a lot of the filler pages seeming to be unnecessary or it being a terrible story. I know the to each their own rule. But to say that this book was not incredibly well thought out and written would be blatantly false. If the story is too long or doesn’t fit your needs is an entirely different issue.
It’s very hard for me to summarize this book without spoiling anything because this book goes so very in depth for the entirety of the story. There is so much to this book that a summary for this could be endless. So here’s a very short version with no spoilers.
Ryland Grace wakes up on a spacecraft and the first thing he encounters is questions from a robot asking him to do simple math. Well Grace doesn’t even remember who he is currently and is completely complexed as to where he is or what’s going on. As he wakes up and tries to fit the pieces back together he comes to the realization that he’s in space. Over time with memories slowly returning he learns that he is on a mission to save humanity from Astrophage. Which is a microbe that will cause the end of earth and it’s solar system by stealing energy from the sun and in return causing an ice age.
While his memories slowly return, he works on theories and experiments on how to defeat/ eliminate Astrophage. While traveling through space Grace discovers another spacecraft and soon finds out he is not the only other being that has the same problem as him. Astrophage is dooming more than one solar system. Grace stunned by his discovery, has no idea of the journey he’s about to encounter in the attempt to save all of humanity, and well potentially other humanities he isn’t quite aware of yet. With a friend he makes along the way, he will encounter a journey of sacrifice and a new meaning of life he never could have imagined in his wildest dreams.

Now that I have finished I have to say I am astounded by some of the negative reviews discussing a lot of the filler pages seeming to be unnecessary or it being a terrible story. I know the to each their own rule. But to say that this book was not incredibly well thought out and written would be blatantly false. If the story is too long or doesn’t fit your needs is an entirely different issue.
It’s very hard for me to summarize this book without spoiling anything because this book goes so very in depth for the entirety of the story. There is so much to this book that a summary for this could be endless. So here’s a very short version with no spoilers.
Ryland Grace wakes up on a spacecraft and the first thing he encounters is questions from a robot asking him to do simple math. Well Grace doesn’t even remember who he is currently and is completely complexed as to where he is or what’s going on. As he wakes up and tries to fit the pieces back together he comes to the realization that he’s in space. Over time with memories slowly returning he learns that he is on a mission to save humanity from Astrophage. Which is a microbe that will cause the end of earth and it’s solar system by stealing energy from the sun and in return causing an ice age.
While his memories slowly return, he works on theories and experiments on how to defeat/ eliminate Astrophage. While traveling through space Grace discovers another spacecraft and soon finds out he is not the only other being that has the same problem as him. Astrophage is dooming more than one solar system. Grace stunned by his discovery, has no idea of the journey he’s about to encounter in the attempt to save all of humanity, and well potentially other humanities he isn’t quite aware of yet. With a friend he makes along the way, he will encounter a journey of sacrifice and a new meaning of life he never could have imagined in his wildest dreams.

Top reviews from other countries


He has to work out why he’s there, and what he has to do, from scratch. And then work miracles. Or in the words of Mark Witney in the Martian, ‘science the s*** out of it’.
Written in a similar style to the Martian, with sections alternating between Ryland-on-Earth and Ryland -in-Space, it’s hard not to picture Matt Damon as Ryland, but though they share the same love of science trivia, and self-deprecating humour, they are very different.
There’s loads of geeky science as he McGyvers his way from one situation to another. Maybe a little too much if you’re not a science nerd or sci-fi fanatic but I loved it.
I loved the quirky characters of all the ‘supporting actors’ (This is so definitely going to be a film!), especially Rocky. Oh, Rocky! Just... read it, ok?

Project Hail Mary succeeds everywhere the Martian did before it, with a slick-ly executed plot, great prose, genuinely good humour and of course a tremendous amount of science. As a microbiologist, I perhaps enjoyed Project Hail Mary even more, and (avoiding spoilers) absolutely loved the attention to detail in the main conceit of the story, as well as the internal logic and experimental approaches used by the main character. So refreshing to see research written in this way, and so well!
The story itself is gripping from beginning to end, and reminded me a lot of Dennis. E. Taylor's 'Bobiverse' mixed with a bit of 'Arrival' for good measure. The narrative flips between the present day on the Hail Mary, and the events that lead up to Ryland Grace waking up alone and with no memory at the beginning of the book. I can honestly say the plot surprised me so many times, and I loved the way Grace develops as a character by the end of the novel. The central friendship between two characters in the story was a joy to read, and had me tearing up by the end! I spent the last third of the book on tenterhooks as the stakes continue to escalate, and really struggled not to read the whole thing in one go.
If you enjoy hard sci-fi or liked the Martian, you will definitely love this book. Even if you think you're not interested in a science-heavy story, I think the pacing and the optimism of the writing is more than enough to make this book a wonderful, exciting read. I will certainly be reading again soon - the biggest struggle now will be waiting to see what Andy Weir writes next!

‘It took me a long time to be established as ‘the cool’ teacher’.
‘Hey, I’m a science teacher, science teachers know stuff’.
‘The amount of times I want to slap parents for not teaching their kids the most basic things’
And on and on and on.
Other reviews talk about ‘the science’, almost intimidated by it, but all of this ‘science’ mentioned needs to be integral to building the strength of the story, not just continuous flappings about random facts and ‘math’ that Weir has researched and desperately tries to crowbar in at all costs to make the book come across as ‘smart’. Instead, why not try to develop the main character’s emotional depth a little? Because this character has almost none. There is no real contemplation or reflection over the solitude of him being in space alone in the first days of waking up from his amnesiac coma (pffff), the impact of waking up with his crew mates dead around him, the confusion of not knowing why he was there in the first place.
The Martian was story-driven. The main character was smart and tenacious, and the story was strong enough to support his witticisms and intelligence to make it plausible. You want the character to succeed. This character in Hail Mary could spiral out into space for all I cared.

The Martian was amazing. Artemis was awful, really, really, awful. This is somewhere in-between. It's trying really hard to be as good as The Martian but also feels like it's trying really hard to be something the author is unable to achieve on his own. It's clunky, cliché and just a little too much like it was written to get another movie deal.