masterpost for @augustellar 2026!
all links will be under the cut for editability; original prompt list with submission credits here
day 1 - patchwork: tumblr | ao3 | instagram
day 2 - blip-a & hail mary crew: tumblr | ao3 | instagram
1) grass (inspired by his last scene on earth) 2) “you’re murdering me!” 3) book rocky/grace meet movie rocky/grace 4) the blip-a crew
day 3 - newton’s first law: inertia - tumblr | ao3 | instagram
law of inertia but specifically about stratt and grace! “an object at rest stays at rest and an object in motion stays in motion.” some sort of symbolism of how she stays stuck on earth, stuck as the scapegoat, and how he is always on the next thing on erid, and is now a savior for their worlds.
day 4 - newton’s second law: force - tumblr | ao3 | instagram
day 5 - newton’s third law: reciprocal action - tumblr | ao3 | instagram
day 6 - pale blue dot - tumblr | ao3 | instagram
would love to see a prompt for earth’s new climate/ice age before the beatles make it back, and how eva + the phm team post-launch lives! are they renegade scientists aboard that ship in the arctic? was stratt condemned by all of earth for her role in the phm mission and forced to escape imprisonment, or did she continue the mission afterwards with gov’t approval? what do all our cities look like during an ice age? just ice age earth and eva + co. trying to save humanity while grace + rocky are out saving the stars!
day 7 - in a galaxy far, far away (star wars) - tumblr | ao3 | instagram
day 8 - to boldly go (star trek) - tumblr | ao3 | instagram
how about a star trek au? could go many ways. maybe eridians are part of the federation, and rocky and grace are a chief engineer and chief science officer aboard a starship. or maybe the eridians are more like the klingon (or the borg? 👀) hostile to anything federation…….. until a landing party gets attacked and grace has to rely on the help of an also-marooned enemy! or maybe erid has just broken the lightspeed travel barrier, and a first contact entourage is sent down to interview the genuis engineer who invented their first warp drive…
day 9 - many universes - tumblr | ao3 | instagram
1) favorite quote/bit from favorite tv show, but redone as phm fanart 2) seconding the crossover prompt <3
day 10 - first contact
first contact -> grace in the lab, naming and discovering astrophage biology, or any other character or oc first learning about astrophage or the petrova problem, or stuff about the arclight probe :)
day 11 - culture exchange
day 12 - cosmic mythos
- græco-roman mythology or pjo crossover!! - astronomical objects are usually named after greek/roman mythology figures - ryland grace, son of apollo will not get out of my head - grace and rocky orpheus and eurydice parallels - adrian and rocky odypen parallels
day 13 - homesick/earthsick
- homesick - downtime - the crew’s all here - touch-starved
day 14 - radiation damage
- grace gets a ‘sun’burn during a beach day on erid? - fic about the petrova taskforce attempting to find other ways to kill astrophage closer to home? - the bittersweetness of the hail mary quilt fading in the dome’s “sun” over time? - rocky’s 46 year long cosmic horror nightmare? yes
day 15 - laser
grace is playing with a laser pointer as rocky is trying to catch it
(note from me: ok on the surface this is so funny but also how exactly would it work if rocky can't see light 😭😭😭 what if instead rocky tries to make grace chase a laser and it obviously does not work on him but when grace is like "bro. why" rocky explains that he saw videos of people doing it to their cats on his portable thinking machine and that's how grace learns that rocky sees him as his cat. LOL)
day 16 - petrova
i love the petrova lines so much they’re so pretty… there’s also the petrova taskforce, irina petrova, the petrova frequency.. there’s a lot of things
day 17 - xeno-veterinarian
grace’s eridian doctors are large animal veterinarians. there are some awkward adjustment periods.
day 18 - rainbows and/or red string of fate
day 19 - extra-spectral colors
grace describes something as magenta and rocky is confused as to why the light-to-texture device reads it as green. (middle rough) cue grace having to explain that magenta happens when the average wavelength of an item falls into the green section but the item itself actually reflects exclusively red and blue light so our brain interprets it as magenta instead of green. rocky baffled that the human brain just straight up invented a color that doesn’t really exist.
day 20 - echolocation
“rocky’s echolocation "vision”/what rocky “sees”/rocky pov
day 21 - final voyage
- grace has spent nearly a decade on the hail mary by the time he gets to erid. like him it's survived far longer than was ever intended and is looking a bit worn around the edges. - how does he feel leaving the ship? - is it a relief, or does he miss it? - is he sad to go? scared about leaving its safety even though it’s cramped? - or is it falling apart when he gets to erid and no longer a safe haven? - and what does rocky think about all of this?
day 22 - recovery
submission 1: i feel like not a lot of people talk about grace’s starvation near the end of the trip to erid and i think that it should be more delved into with more impact such as the obvious more medical reasons such as unable to gain weight or muscle ect ect, but i would like to see more ed rep, especially because personally i headcanon grace as on the spectrum, and i, who is on the spectrum, suffer from mild arfid. so it's something i’d like to see
(note from me: it has been pointed out by folks that grace canonically does not starve while en route to erid, but rather while he's waiting for eridian scientists to synthesize edible compounds for him after they've already touched down on erid. he does contract multiple diseases and is malnourished etc. from having to subsist off a mixture of rations and coma slurry, but is not actively starving while on the hail mary. this is confirmed book canon & heavily implied in movie canon, though the movie does admittedly gloss over it in favor of presenting us with a younger and more able-bodied grace living his best life on erid.)
submission 2: i want more of grace gaining weight on erid! i want him recovering from starvation (and if you so choose, an eating disorder) and gaining weight and being happy!! also! physical disabilities. maybe grace has to use a cane or a wheelchair or crutches or compression clothes. maybe rocky has chronic pain or joint issues or chronic fatigue. (we should make the rock disabled too)
day 23 - celestial divinity
an au where grace is just an angel sent down to earth to help humans save their universe
day 24 - humans/eridians are weird
silly eridians, sleep, humans are weird, eridian wildlife, scary aliens, culture shock, give grace a reason to cry, the blip-a crew dying of radiation, crossover?!, lovingly parody a fanfic trope you like, cat distribution system (yes even in space), angels/be not afraid, in-universe rpf about grace, draw something that gives you cuteness aggression
day 25 - thermodynamic disequilibrium
prompt in honor of this heat wave. put that man in a 95° spaceship. let him cook
day 26 - astronomical arts & crafts
almost all of grace’s clothes are falling apart. he also needs a new hyperfixation. so he gets really really into fiber arts and makes so many clothes that the eridians get genuinely concerned.
day 27 - planetary surface
prompt: surface of adrian!!
day 28 - eridian biome
eridian biomes? i know they’re under a ton of atmospheric pressure, but what about at different altitudes of the planet? or how about eridian civilization, like do they have villages or cities, what do their space elevators look like? landscape prompt?
day 29 - eridian exploration
grace leaving the biodome and exploring the dark surface of erid, and the cities developed to operate in the pitch black. now, rocky’s the one guiding a be-hamster-balled grace through a foreign world.
day 30 - eridian xenonite
grace’s rock garden on erid! maybe he figured out eridian plants too, or made a patio umbrella out of xenonite
day 31 - in memoriam
monuments/fanart back on earth in memoriam of the phm crew











