This subreddit has a few very frequently asked questions, so here are some answers.

1. How did it only take 4 years for the Hail Mary to travel 11 lightyears?

Answer: Time Dilation.

The Hail Mary uses very efficient engines to approach the speed of light. At those speeds, time is not constant. On Earth, it took the Hail Mary 13.7 years to travel to Tau Ceti. For Ryland Grace, it only took about 4 years. Don't be an Eridian, learn more about Time Dilation and Special Relativity!

2. Why couldn't they just wait for the Astrophage to double, and then do a return trip?

Answer: It would take an extremely long time, and they would need much more than double the fuel.

a. Whilst small amounts of Astrophage in a lab can double every 8 days, the limit for Project Hail Mary was the amount of energy it takes. Eva Stratt devoted a quarter of the Sahara Desert to be covered in 'Blackpanels', little Astrophage breeding solar panels. This allowed them to make one metric tonne of Astrophage every day. Astrophage is very hungry for energy, and to use Astrophage for fuel, it needs to be 'enriched', or made so that every single cell is full of energy.

b. It would take more than double the fuel. For a return trip on a rocket, the fuel to get back, 2 million kilograms for the Hail Mary, is the payload to get there. The Hail Mary had a 20 to 1 fuel mass ratio, so 2 million kilograms could get 100 thousand kilograms of food, ship and Ryland Grace to Tau Ceti. A return trip would have a payload of at least 2 million kilograms, so they would need another 40 million kilograms of fuel. This would take 20 times as long as it took to make fuel for a suicide mission.

3. Why couldn't they make more Astrophage on the way there?

Answer: Astrophage is really hungry!

To make the 2 million kilograms of Astrophage for a one way trip, they needed a lot of energy. They got this energy from the Sun. During interstellar travel, the Sun, and other stars, would be way too dim to feed Astrophage. The Hail Mary also has a far smaller area to collect any solar power, so it would take many decades, if not centuries to make enough Astrophage. Astrophage also requires physical matter to grow, such as Carbon Dioxide. The Hail Mary couldn't carry all of that CO2 on the way there without a whole lot more fuel.

4. How can Eridians see the Petrova line, and stars?

Answer: Eridian science has come a long way!

While Eridians can't see light themselves, they have developed technology to detect light. They haven't figured it all out yet, as they don't know about Special Relativity and the speed of light, but they can detect light and use radio waves for radar and communications. They used this technology to learn more about their Petrova line, and find out about Tau Ceti.

Eridian scientists likely theorised about their star, because just like on Earth, all of the energy comes from the Sun. The only difference is that Erid's thick atmosphere means that the ecosystem starts all the way up in the clouds, and gradually transfers energy downwards. Eventually, when they built a space elevator, they would have found out a whole lot more about stars and planets. We don't know whether they did this before or after the Astrophage crisis started.

5. How did Eridians not know about space radiation, if they do know about light?

Answer: Space radiation is a bit different!

In Space, especially interstellar space, the most dangerous type of radiation is cosmic rays. These are very fast moving particles, such as protons and electrons, which when they hit Human or Eridian ships at nearly the speed of light, can sometimes pass through the material of the ship, and damage DNA. Eridians don't know about these because their planet's massive magnetic field protected them from all radiation, even when they're on their space elevator. Because they were never exposed to radiation as a species before space travel, they are extremely susceptible to it, far more than humans are. Light is a different type of radiation, and some of it is dangerous, gamma rays, and most of it is not. Ships moving at near the speed of light can also experience radiation from tiny particles in interstellar space, that strike the ship at near the speed of light. There is also radiation from radioactive materials, but we don't know if the Eridians have learned about those. So, to summarise, even though the Eridians know about light radiation, they didn't know that space was filled with cosmic rays.

6. Why didn't they collect Astrophage from the Petrova line, at Venus, or at Tau Ceti?

Answer: Space is big!

'You just won't believe how vastly, hugely, mind-bogglingly big it is.' While the Petrova line contains enormous quantities of Astrophage, it is also very, very sparse. The Petrova Taskforce sent a probe to Venus, and could only collect and return 100 cells to Earth. To fuel the Hail Mary requires 2 million kilograms, which would be many, many more cells. The collector would have to be many kilometres in diameter, or wait for many years, to collect enough for a one-way trip. Such a collector would be too large and heavy to send to Tau Ceti.

7. What happens to the other stars near Earth?

Answer: Not much! (credit to u/Equivalent-Board206)

Astrophage, when left completely unchecked, dims a star by a maximum of 10%. That is just barely noticeable to the naked eye, looking up at the night's sky.

Lowered solar output would force the habitable zone (sometimes called the Goldilocks zone) closer to the sun. This may result in previously habitable planets being thrust into glacial ice ages and rendering them entirely uninhabitable. In theory, it could allow previously uninhabitable planets to become habitable, but habitability requires more than just being in the habitable zone.

For Earth, the lowering solar output was leading to a global average temperature drop of about 8°C which would result in rapid glaciation and global agriculture collapse.

Mars too would be colder. Venus has a permanent runaway greenhouse effect and would see no perceptible difference. Nor would the gas giants as they already receive less than 5% of the sunlight that Earth receives.

Beyond impacts to weather and habitability, a drop in solar output would not have any effects on the planets themselves or their orbits.

8. How does Rocky understand Grace?

Answer: Eridians are really smart!

Eridians have extremely good memory, due to the way their brains work. This is especially true for audio memory, because that is the main way in which they interact with the world. At the same time that Grace was recording sounds on his laptops, and writing definitions, Rocky was listening to Grace's words, and remembering them with their respective definitions. They started with charades, but later on they were able to ask each other for definitions of words, and how they are said in English or Eridian.

9. How did Rocky know about the atmosphere of the Hail Mary?

Answer: Grace accidentally sampled it for him.

When Grace sent back the Xenonite cylinder, 'Blip B', it had become full of the Hail Mary's air. The Hail Mary, like all of the Apollo spacecraft, and many spacesuits used today, uses a 100% oxygen atmosphere, at low pressure (20%-30% of Earth's sea level pressure). Due to the low pressure, it is not as dangerous as pure oxygen is at atmospheric pressure. The lack of Nitrogen in the Hail Mary is also how the Taumoeba were able to spread freely, as Earth's atmosphere is 80% Nitrogen, very deadly to Taumoeba.

The book contradicts itself by stating that Rocky's atmosphere is 29 times that of Earth's, and 29 times that of the Hail Mary. Andy Weir has acknowledged this goof, and stated that it is 29 times the pressure of Earth.

10. Do Eridians prove Ryland Grace's theory about life and water correct?

Answer: Mostly no, as Eridians are water based life forms.

Ryland Grace's theory was that life could easily exist without water, and that the Goldilocks Zone, the distance from a star where orbiting planets can easily have liquid water, is not particularly special. Eridians use water to move their muscles, and have cells and DNA not too different from life on Earth. However, the planet Erid is not in the Goldilocks zone, although it does still have liquid oceans.

A side note that the actual scientific community tends to agree that life could definitely exist without water, and could even be based on silicon chemistry. It would just be very hard to recognize life so different from our own!

Disclaimer: Zero AI was used in this post. Not even spell check. (I just added bold text to make it look a bit better).

Note: All redditors that frequent this subreddit, please please rewrite these answer, and I will put them in the post body. Also please add more Q&A, because I can only remember these two FAQ off the top of my head.

The PHM fandom has some amazing fan authors who have expanded the story into different directions. If you are a PHM fan and haven't dipped into fanfic yet, you are missing out!

Here's a list of story recommendations to get you started with. They vary widely in style, length, and content, and not all of them are probably for you. Note the ratings and tags before reading (they might change after writing this). If you like a story, don't forget to leave kudos to the author! If you don't like a story, just move on to the next one.

If you have more fanfics you'd like to recommend, please do add.

I've added icons after each name to give you a general idea of what the fic is mainly about:

🫨 Adventure / exciting and dangerous situations!

🔬 Lots of science / problem-solving.

😰 Plenty of angst / emotional turmoil.

🤡 Funny / comedy / crackfic, don't take too seriously because the author isn't.

🌞 Fluff / feel-good story. Might still include heavy subjects.

😭 Tear jerker. The purpose of this fic is to punch you in the gut and make you cry.

❤️ Main focus on relationships / love. Can be friendship, romance, or left open to interpretation.

🪨 Focuses on Eridian characters and/or Erid worldbuilding.

🌍 Focuses on events of Earth and/or human characters.

🩸 Blood / gore / violence / descriptions of medical procedure.

🌶️ Spicy

💀 Grim / disturbing

🎤 Podfic available

Rating: General Audiences

Saving Grace 🔬🫨🎤 CptnBara

https://archiveofourown.org/works/55999603/chapters/142221274

The Project Hail Mary book rewritten from Rocky's perspective.

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took me back to something (that i'd somehow lost somewhere along the way) 🌞 AruiI

https://archiveofourown.org/works/84103506

The biodome is, at last, finished. Grace runs.

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planet earth is blue (and there’s nothing i can do) 😭🌍 sebastian2017

https://archiveofourown.org/works/85659096

While fighting boredom on the trip back to Earth, Grace finds a video log from Ilyukhina and Yao.

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Advection Fog 🌍 Acewithapaintbrush

https://archiveofourown.org/works/85709366

Carl is less than thrilled when he gets reassigned to babysit a teacher playing around with three dots in a glorified warehouse.

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Teacher Grace’s Earth Human Romance 🤡🎤 ketonebodies

https://archiveofourown.org/works/85926356

Three Eridian kids try and write a romance novel about their teacher.

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Dear Mr. Grace 🌍😭 CubeTime

https://archiveofourown.org/works/86922686

When Ryland Grace left earth, he had no spouse or child to leave behind. He didn't even have a dog. That didn't mean that there weren't people who noticed his absence.

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Xenohospital 😰 bedtime_puppi

https://archiveofourown.org/works/83967166/chapters/221367416

The drug Grace was given to induce amnesia before going on the Hail Mary has unpredictable long-term side effects.

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here's where the stories live (here with the peace) 😭 deervsheadlights

https://archiveofourown.org/works/83035871

For Eridians, the six of six of six is special, and today marks Grace's 216th anniversary. Measured, of course, by Earth's orbit around its star Sol. In the morning, while the fog is still high, Adrian finds Rocky at the beach.

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what exists beyond, beyond, beyond 🪨 ❤️tardigradeschool

https://archiveofourown.org/works/84689911/chapters/223473601

Rocky and Adrian lay eggs, but everything doesn't go according to plans.

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Without a Doubt 🪨🔬 voidknight

https://archiveofourown.org/works/82297851/chapters/216600066

Featuring fluff, worldbuilding, and linguistic nerdery!

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three's company 🩸❤️ Goldmonger

https://archiveofourown.org/works/83307921

Grace and Adrian have a chance to connect and find common ground.

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Enrichment 🌞 alatarmaia4

https://archiveofourown.org/works/82321651

The Eridians have finally gotten the water feature in Ryland's personal zoo enclosure just right (even if Rocky would like him to stop calling his dome that).

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and the tree was happy 😭 gossippool (fearandhatred)

https://archiveofourown.org/works/94797661

There is a tree that stands alone in the biodome, taller and older than all the rest. Grace had planted its seed when she was born. This is the only thing she does not remember.

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to live my life as it's meant to be 🌞❤️ Stargirl_And_Potts (A_Candle_For_Sherlock)

https://archiveofourown.org/works/87993171

Somewhere between Adrian and Erid, Rocky invents the xenosuit to help Grace. It turns out they both needed it.

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Grace Fix 😰🌞 thingswithwings

https://archiveofourown.org/works/92471691

The How to Fix Grace binder, as I labelled it, grew thicker and thicker as we made plans to look after my soft human body. So, after all that, of course it was Rocky who got sick.

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The 5 Weirdest Vlogs that Dr. Ryland Grace Sent Back to Earth 🤡 Anonymous

https://archiveofourown.org/works/82618566

Eventually, the Beetles return to Earth with all of Grace's recordings on them. Naturally, someone at Buzzfeed is going to write a listicle about it.

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an unreal thing 😰 YourMinecraftBoyfriend

https://archiveofourown.org/works/94011591

Through a series of small coincidental instances, Rocky becomes convinced that Grace simply cannot be real.

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my grace ❤️ some_pomegranate_tea

https://archiveofourown.org/works/85877681

Rocky's language lesson for Grace turns into a discussion about the depth and importance of their friendship.

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This blessed house of mine 😰❤️ Pebsinspace (Atalto)

https://archiveofourown.org/works/88924966

They’re six days out of landing at Erid. The situation is tough - they’re running out of rations, out of xenonite, out of time - but they’ve pulled through this far. Grace just needs to work out how to dock at the orbital elevator, and they’re dandy- Except suddenly, Rocky doesn’t want to go home.

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(noun) meaning a god-given gift or kindness ❤️ iThinkIm_slowly_going_insane

https://archiveofourown.org/works/86565511

Rocky, Grace, and the art of reacting to your best friend telling you that you're the literal answer to his prayers.

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The Best Mind in the World 🌍 StarlightPhoenix

https://archiveofourown.org/works/83264016

One day, Mr. Grace disappears from class. He reappears on TV as part of the Project Hail Mary team, but Abby was waiting for the day after the launch when he would go back to teaching.

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diminishing second ❤️ paperbeetles

https://archiveofourown.org/works/88658141/chapters/235235531

The ache I feel for Adrian has been a part of me for so many years that it is a familiar dragging weight, like a mangled sixth limb. The ache for Grace is stranger, worse. Not because he is an alien, but the opposite; he is so much of myself that I have entirely lost the sound of where he begins and I end, and somehow I still want him closer, closer, closer.

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The Cut that Always Bleeds 🫨🩸 Emdanste

https://archiveofourown.org/works/84769186

Ryland Grace is over what happened to him on Earth. Yeah, it sucks, but he's made peace with it. That is, until an intruder in his biodome triggers a flashback.

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In Your Arms ❤️ Velika_Azure_Wing

https://archiveofourown.org/works/82597591

Ryland Grace slams face first into the realization that he will never be touched by another living being again. Rocky does his best to help.

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Volunteers... Of A Sort. 🌍 One_Real_Wrimonkey

https://archiveofourown.org/chapters/220135796

Yao finds out how most of the science and engineering team were recruited by Stratt.

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Rise in the Heat, Settled Soft 😰❤️ Azryael (red_velvet_wings)

https://archiveofourown.org/works/83597781

A handful of days into the journey to Erid aboard the Hail Mary, and Rocky hasn't slept. Rocky hadn't adjusted well to being alone again, and isn't totally sure he isn't still alone. Ryland Grace to the rescue.

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absence makes for idle hands ❤️ YourMinecraftBoyfriend

https://archiveofourown.org/works/91805866

Rocky is led to believe that the Earth hacky sack Grace gives him is a courting gift. He responds to his new mates absence just as sanely as Grace does.

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The Space Between Them 😭 RockyGracePHM

https://archiveofourown.org/works/86360096/chapters/228458146

Ryland Grace has just said goodbye to the best friend he's ever had, before the Hail Mary returns to Earth and the Blip-A returns to Erid. And for the first time in a life spent comfortably alone in crowds, he is truly, agonizingly lonely. Ahead of him, a journey of four years, two months, and eleven days returning to an Earth he's no longer sure he wants. All he knows right now is that he misses his only friend as the space between them widens.

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Earths favorite war criminal VS Earth's most hated man 🤡 Anonymous

https://archiveofourown.org/works/84811881

Trump insists on a personal tour of the Vat and Stratt fucking hates everything about this.

Rating: Teen And Up Audiences

The Long Journey Home 🌍🔬🫨🎤 HeartAway

https://archiveofourown.org/works/68584716/chapters/177570376

After decades of living on Erid, Grace returns to Earth with an Eridian delegation. And Rocky, of course!

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The Chronicles of Terra's Grace 🌞🌍 Clare_Hope

https://archiveofourown.org/works/84296496/chapters/222325341

Earth sends a ship to Erid for a friendly visit and unexpectedly find Grace there.

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The Gift Receipt Rockimatic Universe 😰🔬🪨🫨🎤 IvyLee

https://archiveofourown.org/series/6217076

A sequel series about language, communication, miscommunication, integration, letting go of fear, and watching amazement grow in the space it leaves behind.

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Then, Now, Us 🌞 TheArchaeologist

https://archiveofourown.org/works/89750646

On erid, Grace gives a lesson to his small students about early human culture.

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Permission to Hope 🫨🔬🎤 sburbanite

https://archiveofourown.org/works/84922261/chapters/224167046

Grace and Rocky set sail for Erid and unpack all their emotional baggage along the way.

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Prism the Eridian 🪨 22FantasyLover22

https://archiveofourown.org/series/6254746

Grace becomes an adoptive parent to an abused Eridian child.

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keep reminding me 🌞 GammaRays

https://archiveofourown.org/works/87550196

Grace is convinced that his best friend can't possibly imagine how difficult it would be to keep a human alive on Erid. But he can. He can see all the ways in which everything will go spectacularly wrong, until the fears and anxieties become unbearable. But Rocky does what he does best - Rocky fix.

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"Ki i te tau e tangi atu nei" 😰🫨 spektrewrites (BadForTheHeart)

https://archiveofourown.org/series/6065106

Stories about love, desperation, codependency, trauma and hope. About people you'd die for. And people you'd live for. And most of all, about people you love to the point of invention.

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The Ryland Grace Memorial Diner 🌍 holyflyingswisscheese

https://archiveofourown.org/works/84063361

A look at the people of the San Fran diner Grace goes to every morning for breakfast in the book.

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Rockabye 🤡🪨 Skye_the_Lofty_Nutcase

https://archiveofourown.org/works/87569761/chapters/232021896

Ryland Grace is stuck trying to speak Eridian, immediately makes himself sound like a child, and Rocky's world and family scramble to help this strange pebble. Misunderstandings galore, alongside hurt/comfort and angst and fluff.

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From the Library of the Petrova History Commission 🌍 GoldenForests, jestayork

https://archiveofourown.org/works/85430251/chapters/225664551#main

The world's reaction to Ryland Grace over the decades, in the form of archived internet posts.

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This is the start of something ❤️ sidewinder

https://archiveofourown.org/works/84133906

Rocky watches Grace sleep as they begin the long journey to Erid, and thinks of all the human has become to him.

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i beg to differ, said the red fox 🌍😭deervsheadlights

https://archiveofourown.org/works/84981696/chapters/224352321

After thirteen years on Erid, Grace leaves his true home for Earth. Eva Stratt lives to see him return. Earth takes note of the changes.

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The Grace Period 🪨🔬😰 petramss

https://archiveofourown.org/works/85233311/chapters/225072766

Ryland Grace saved Earth, he saved Erid. He was supposed to die a hero somewhere between the stars. Or at least he should have, if not for a certain Eridian who has taken a great offense to the short, finite nature of human life. Instead of cherishing the limited time left, Erid reworked the foundation of what was considered scientifically possible—they found a way to turn their resident alien into an Eridian.

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approach the asymptote 😰❤️ lizardhands

https://archiveofourown.org/works/85106316/chapters/224721586

Rocky and Grace part ways for their respective planets. It should feel like a victory. It doesn't.

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Kind regards, the Eridian Welcoming Committee 🤡 Fruitbird15

https://archiveofourown.org/works/87540696/chapters/231936191

"The Committee worked incredibly hard to provide him with comfort, enrichment and communication, with the slight caveat that they were. Well. Bad at it."

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I Dream In Monochrome, He Lives In Technicolour ❤️ WanderingInkpot

https://archiveofourown.org/works/87035006

Rocky thinks about Grace, a lot. Forced into a healing sleep after their fishing trip doesn't quite go to plan, it's just about all he does. Maybe one of these days he'll be able to figure out why.

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SCHEDULE B, SECTION 4: Declaration of exotic pet 🤡🎤 doomedblade

https://archiveofourown.org/works/85100686/chapters/224705256

Grace and Rocky face one of their greatest challenges yet: Eridian bureaucracy at the customs.

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back on earth 🌍 rib14

https://archiveofourown.org/series/6027576

People on Earth (including Grace's students and Marissa) keep on living and remembering Grace long after he is gone. This story is told through snippets on social media and news outlets.

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Eriddit 🤡 calensis

https://archiveofourown.org/works/83975976/chapters/221392561

Eridian reddit reacts to extraterrestrial life.

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There's the moon asking to stay ❤️ cianfrie

https://archiveofourown.org/works/87450296

On the way to Erid, Rocky ponders how to make Grace stay there with him.

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Accident Waiting to Happen 😰🩸 constantconfusion14

https://archiveofourown.org/works/83706976/chapters/220602221

Within the tight quarters of the Hail Mary, misunderstandings, arguments, and accidents are bound to happen. It's especially unfortunate when all three happen at once.

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The Knowing ❤️ tamatojam

https://archiveofourown.org/works/87250976

Adrian joins Grace on a sea glass hunt. Human brains get weird and gentle feelings are shared.

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Escape Velocity 😰 PainAltar

https://archiveofourown.org/works/85536056/chapters/225976661

Grace is dying. He and Rocky have made it all the way to Erid, but getting an emaciated, malnourished, mentally fragile Ryland Grace down to a planet designed to kill him is not a simple feat. Rocky desperate to bring his friend home with him, but Grace himself might become the biggest obstacle to seeing that dream realized.

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still alive, killing time at the cemetery ❤️ crosspin

https://archiveofourown.org/works/90803131

After returning to Erid, Rocky struggles to make his marriage work. Grace doesn't make that easy.

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forever altered ❤️ deervsheadlights

https://archiveofourown.org/works/82751431/chapters/217859831

Grace is put on cleaning duty and gets a mysterious fourth bag of vodka for his troubles. Rocky begrudgingly takes on the role of Designated Driver slash Space Blob Supervisor, and receives a different kind of gift in return.

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The Wire Mother 😰 nopaintjustpain

https://archiveofourown.org/works/84543521/chapters/223052871

Grace starves for more than just food on the journey to Erid.

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The Nine Most Inspiring Messages Found In The Hail Mary Beatles 🤡 holyflyingswisscheese

https://archiveofourown.org/works/86172436

During their journey back to Earth, the Beatles gain sentience. Their conversations: about humanity, about hope, and about sushi.

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the space between ❤️ lizardhands

https://archiveofourown.org/works/84699081

Rocky is yearning.

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Vogue 🤡🪨 TheTearThatHangs

https://archiveofourown.org/series/6192361

The chronicles of Dr Ryland Grace's experience as a cultural icon on the planet Erid.

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heartbeat rhythms ❤️🎤 aleafumbrella

https://archiveofourown.org/works/82422591

Rocky makes the flexible xenonite membrane to comfort Grace.

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Executor 😰❤️ Goodluckdetective

https://archiveofourown.org/works/82793481

8 months after Grace and Rocky arrive on Erid, Adrian and Grace have an important talk. Without Rocky. That’s on purpose.

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all the choices in the world ❤️ rbt_lvr

https://archiveofourown.org/works/84469241

On their way to Erid, Grace and Rocky discuss the future and the nature of their relationship.

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damn cold night ❤️ childoflightningg

https://archiveofourown.org/works/9060742

Rocky has a risky little habit of being honest with Grace while he's sleeping.

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grace trust rocky, question? 💀 bedtime_puppi

https://archiveofourown.org/works/85189301/chapters/224949276

Grace and Rocky’s unlikely friendship saved the day. They found the cure to save the stars. Their mission is done. Now, Grace thinks, they'll have to say goodbye. But Rocky has seen the signs: regardless of what Grace thinks, Earth is not safe. It's a hard decision to make- but he will keep Grace from harm. Even if it has to be against Grace's will.

Rating: Mature

a deconstruction of boundaries ❤️🌶️ Grapesey (YumGrapeJuice)

https://archiveofourown.org/works/84953286

Rocky discovers nature's laws aren't as inflexible as they'd thought. He puts this to good use.

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rocky holds it 🤡 landsat9

https://archiveofourown.org/works/87873591

Grace and Rocky have a leaky adventure in the bathroom.

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phenomenal nominal nothing ❤️🌶️ grimark

https://archiveofourown.org/works/83725801

Eridian scientists have managed to clone meat for Grace. Rocky helps him to eat.

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(pray for) Us Sinners 🩸😰 keesha_the_cat

https://archiveofourown.org/works/81563671/chapters/214495116

The Eridians have done their best to treat Ryland Grace well since he saved their planet. At least, most of them. A few years after his arrival, he is abducted by a group more interested in his biology than his wellbeing. Rocky and the others scramble to find him, before it's too late.

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dog days ❤️🌶️ furiosophie

https://archiveofourown.org/works/88560516

Two years and seventeen days after reaching Erid's orbit, the climate control in the biodome breaks.

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endlessly through hollow bones 💀❤️ deervsheadlights

https://archiveofourown.org/works/92077991/chapters/245310346

Rocky and Grace discuss Eridian mortuary practices.

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this one kiss ❤️🌶️ theberries

https://archiveofourown.org/works/95051506

Rocky and Grace share a kiss.

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Aurum ❤️ onlyoneday

https://archiveofourown.org/works/93275551/chapters/248898536

Two survivors try engineering a solution to touch starvation and discover they’re building a way to admit they love each other.