r/projecthailmary
Welcome to ProjectHailMary
How to think about r/projecthailmary
This community is dedicated to discussing Andy Weir's science fiction novel 'Project Hail Mary' and its themes, characters, and scientific concepts. Members engage deeply with the narrative, exploring topics such as astrophysics, biology, and the intricacies of the plot. The community is distinct for its blend of scientific inquiry and literary analysis, often leading to rich discussions that bridge fiction and real-world science.
Confidence 4/5
Audience
Participants in this community are typically science fiction enthusiasts, often with a strong interest in science and technology. The demographic skews towards adults, including both casual readers and dedicated fans of the genre. Members appreciate thoughtful discourse and enjoy dissecting complex ideas, fostering a vibe that is both intellectually curious and supportive.
Posting culture
Content that thrives includes in-depth analyses, fan theories, and discussions about the scientific principles illustrated in the book. Members tend to favor well-researched posts and original insights, while low-effort or overly promotional content is often downvoted. The posting cadence is moderate, with active discussions following significant events or anniversaries related to the book.
Brand engagement notes
Brands should approach this community with caution, as members are generally skeptical of overt promotion. Authentic engagement through sharing relevant scientific insights or participating in discussions about the book's themes can be effective. Brands that align with the community's interests—such as those in science, technology, or literature—should focus on providing value rather than direct marketing. Avoiding promotional language and instead fostering genuine conversations will resonate better with members.
Top keywords
What r/projecthailmary talks about
Weighted by how often each term appears in posts and comments, relative to baseline frequency. The largest words are the strongest signals of community focus.
External signals
Where the community looks
Top external domains linked from posts and comments — a quick read on the sources of truth this audience trusts.
Top contributors
Who shapes the conversation
The most active and most-upvoted posters and commenters in this community. Useful when planning outreach or studying a community's tastemakers.
Top posters
By post count
- u/ipecacOH
- u/[deleted]
- u/JohnNelson2022
- u/Gibodean
- u/JustPassingThrough53
- u/Shankar_0
- u/Performer-Money
- u/hgaterms
- u/KesTheHammer
- u/brechoprint
- u/warkel
- u/Standard_Delay_1182
- u/Small_Airport5635
- u/TheElementOfFyre
- u/isdi0
- u/Not0mnis
- u/drew19911942
- u/prefim
- u/eatingkidsinmyattic
- u/plantscatsandus
- u/HungDaddy120
- u/wittylama
- u/spamloren
- u/frodosbitch
- u/Strange-Box-6638
- u/EvilGreebo
- u/castle-girl
- u/nagidon
- u/chrisdarby80
- u/No-Design-8551
- u/JungleTrout
- u/sarsagorilla
- u/andiepants360
- u/brethammond
- u/InvisibleSpaceVamp
- u/redpnd
- u/Askhai
- u/Tintin_Quarentino
- u/-heaveninawildflower
- u/metdepickup
- u/GORGONFROMTHE4TH
- u/RRTAmy
- u/MrsAppleForTeacher
- u/17R3W
- u/Ferninja
- u/OnePunch100
- u/chucklezdaccc
- u/TheCatAndCuriousity
- u/absurdlazy
- u/SorakaWithAids
- u/andyjoe24
- u/Enough_Concern_1978
- u/Brainless109
- u/lilhorticulture
- u/AtreidesOne
- u/thewizardtim
- u/skyrymproposal
- u/stephensmat
- u/megallanic
- u/CastSeven
- u/reactor_core
- u/fil-
- u/Ok-Technician1713
- u/Myron_Bolitar
- u/Sgthouse
- u/KillRoyTNT
- u/SpecificCrash
- u/amaze_amaze_amaze
- u/kimbiablue
- u/heartsoreduke23
- u/Knowmad29
- u/AluraNoakes
- u/Drawinism_Art
- u/Hayd0471
- u/throwaway3094544
- u/DavidBurt
- u/Kerbal_stuck_on_Eve
- u/wannabgourmande
- u/lost121212
- u/EldritchPiper
- u/Ebonmeris
- u/amyellen81
- u/lwilli10
- u/Nicoli0012
- u/olegpashkovsky
- u/XxGrimacexX
- u/mitchpereraa
- u/viswa08
- u/MiniMissSquee
- u/junetwentyfirst21
- u/ProminentPigeons
- u/TySuuuu
- u/lukewarm120805
- u/DoctorAbe42
- u/jame5westman
- u/Blazkull
- u/RaksharAlpha
- u/maathyas
- u/JulesSherlock
- u/NakD_Bootstraps
By votes
- u/JustPassingThrough53
- u/JungleTrout
- u/ipecacOH
- u/amaze_amaze_amaze
- u/Performer-Money
- u/drew19911942
- u/kimbiablue
- u/heartsoreduke23
- u/[deleted]
- u/Knowmad29
- u/sarsagorilla
- u/hgaterms
- u/andiepants360
- u/AluraNoakes
- u/plantscatsandus
- u/Shankar_0
- u/Drawinism_Art
- u/Not0mnis
- u/prefim
- u/Hayd0471
- u/throwaway3094544
- u/DavidBurt
- u/Kerbal_stuck_on_Eve
- u/wannabgourmande
- u/Standard_Delay_1182
- u/brethammond
- u/InvisibleSpaceVamp
- u/lost121212
- u/Small_Airport5635
- u/EldritchPiper
- u/amyellen81
- u/Ebonmeris
- u/lwilli10
- u/TheElementOfFyre
- u/Nicoli0012
- u/XxGrimacexX
- u/HungDaddy120
- u/olegpashkovsky
- u/JohnNelson2022
- u/KesTheHammer
- u/Askhai
- u/mitchpereraa
- u/metdepickup
- u/viswa08
- u/wittylama
- u/eatingkidsinmyattic
- u/MiniMissSquee
- u/junetwentyfirst21
- u/Gibodean
- u/TySuuuu
- u/ProminentPigeons
- u/lukewarm120805
- u/DoctorAbe42
- u/GORGONFROMTHE4TH
- u/Blazkull
- u/maathyas
- u/jame5westman
- u/RaksharAlpha
- u/spamloren
- u/Tintin_Quarentino
- u/JulesSherlock
- u/NakD_Bootstraps
- u/warkel
- u/sinefromabove
- u/tetsukei
- u/redpnd
- u/Ferninja
- u/chucklezdaccc
- u/YTItsRoyalxX
- u/brechoprint
- u/Jimstein
- u/barnabasjohnthomas
- u/frodosbitch
- u/dsgn123
- u/personfromaplacee
- u/ValiantTheOdd1
- u/Blackmesa232323
- u/Strange-Box-6638
- u/OnePunch100
- u/RRTAmy
- u/c3pogavin123
- u/jenderation
- u/Atlantic789
- u/The_Fantasy_Review
- u/-heaveninawildflower
- u/montypython85
- u/Snoo99117
- u/MrsAppleForTeacher
- u/icepenguin19
- u/RickS-C-137
- u/cubinginfinite
- u/Apolloman31
- u/invisibleperson555
- u/ExortTrionis
- u/LaurenSomm
- u/jottinger
- u/anth
- u/BaphometSusanoo
- u/mendawwwgy
- u/mollyweasleywilliams
Top commenters
By comment count
- u/InvisibleSpaceVamp
- u/[deleted]
- u/hgaterms
- u/Festus-Potter
- u/jameskayda
- u/RRTAmy
- u/ipecacOH
- u/EdgyYoungMale
- u/Gibodean
- u/bookish_bacillaria
- u/beaboop23
- u/Ferninja
- u/Nabrix726
- u/OnePunch100
- u/Killintym
- u/eatingkidsinmyattic
- u/KesTheHammer
- u/josephlucas
- u/Just_Goose1671
- u/Galatheall
- u/amaze_amaze_amaze
- u/andiepants360
- u/queeroctopus
- u/WhoDat24_H
- u/SapceY
- u/Pacer-Test1283
- u/Teknekratos
- u/AgentSnowCone
- u/ienfjcud
- u/GorathTheMoredhel
- u/Reasonable_Copy8579
- u/pjkitty
- u/ExpectedBehaviour
- u/jjmoreta
- u/nagidon
- u/Hugh-Jassoul
- u/ellaanii
- u/dsgn123
- u/brechoprint
- u/Defeat-the-Kraken
- u/AboveDisturbing
- u/Automatic-Stage4443
- u/Madited17
- u/astro3naut
- u/djseraphim777
- u/Myron_Bolitar
- u/worldsfastest
- u/Still-Performance456
- u/Browncoatinabox
- u/Burkey8819
- u/RaksharAlpha
- u/Joelptay
- u/DriveExtra2220
- u/astoneworthskipping
- u/DJDarwin93
- u/globefish23
- u/Pristine-Judgment340
- u/McSnail79
- u/MituButChi
- u/JackIrishJack
- u/ScalarWeapon
- u/Bailey_The_Dog
- u/eliwright235
- u/USAF6F171
- u/ratzerman
- u/anjupiter
- u/KitKat_J
- u/RenderSender
- u/clarkbarniner
- u/Philletto
- u/rouciee
- u/EvilGreebo
- u/rjt2416
- u/MediumToblerone
- u/OnePunchFan8
- u/ProtectionMaterial09
- u/emotionalthroatpunch
- u/mjinlk
- u/tea-and-chill
- u/drummtrip
- u/ToastyTheDragon
- u/Sinistrodactyl
- u/JadeChroma
- u/Feeling_Bank3696
- u/kiser420
- u/phreek-hyperbole
- u/Potatoking620
- u/potatopartytime
- u/Individual-Box-6246
- u/andyjoe24
- u/OptimisticNietzsche
- u/GabuEx
- u/fawnling_science
- u/gargtyrion
- u/lemontreeve
- u/Speedius99
- u/amino__disrespect
- u/BootlegStreetlight
- u/STOPCensoringMeFFS
- u/barlog77
By votes
- u/The_Fefl
- u/Bailey_The_Dog
- u/InvisibleSpaceVamp
- u/jameskayda
- u/[deleted]
- u/hgaterms
- u/EdgyYoungMale
- u/Automatic-Stage4443
- u/globefish23
- u/KobayashiMary
- u/cluch3
- u/DriveExtra2220
- u/nagidon
- u/Defeat-the-Kraken
- u/KesTheHammer
- u/gabezermeno
- u/OnePunch100
- u/RRTAmy
- u/zrudd19
- u/Speedius99
- u/queeroctopus
- u/Killintym
- u/Ferninja
- u/SirJTheRed
- u/rakawido
- u/Pristine-Judgment340
- u/Papux200
- u/McSnail79
- u/eliwright235
- u/Sinistrodactyl
- u/nefertaraten
- u/IANAL_but_AMA
- u/Festus-Potter
- u/Galatheall
- u/coffeelover96
- u/darwin_thornberry
- u/Nabrix726
- u/No-Design-8551
- u/JadeChroma
- u/amino__disrespect
- u/ipecacOH
- u/throwaway3094544
- u/brechoprint
- u/DJDarwin93
- u/mrlitebeer27
- u/DaisyMaeCrump
- u/Teknekratos
- u/Browncoatinabox
- u/Joelptay
- u/Vivid-Inside7854
- u/ThresholdSeven
- u/USAF6F171
- u/KitKat_J
- u/loubben
- u/ARWYK
- u/Madited17
- u/Munchkinpea
- u/RaksharAlpha
- u/antidense
- u/astoneworthskipping
- u/SapceY
- u/SorakaWithAids
- u/dschmona
- u/Gd3spoon
- u/Open_Bee2008
- u/NotAPreppie
- u/ps3x42
- u/plantscatsandus
- u/beaboop23
- u/JulesSherlock
- u/Burkey8819
- u/ratzerman
- u/ellaanii
- u/Pengoon2
- u/Gibodean
- u/Danny2465
- u/mjbart007
- u/benim972
- u/Philletto
- u/ClydePeternuts
- u/milesercat
- u/cavem7n
- u/ienfjcud
- u/LazaroFilm
- u/RoughInternational41
- u/rmcfagen
- u/Sgthouse
- u/Lolapaloser828
- u/BradyHoke
- u/SamTornado
- u/anjupiter
- u/josephlucas
- u/BootlegStreetlight
- u/RallyX26
- u/djseraphim777
- u/Descartes_Farts
- u/MsBluffy
- u/RedMountainPass
- u/ZappSmithBrannigan
- u/Scar107
Similar communities
Where this audience also spends time
Topic-adjacent communities surfaced from Reddit's own related subreddit signal.
FAQ
r/projecthailmary — frequently asked questions
Quick facts about this subreddit's size, history, focus, and related communities.
How many subscribers does r/projecthailmary have?
r/projecthailmary has approximately 46,863 subscribers as of May 27, 2026.
When was r/projecthailmary created?
r/projecthailmary was created on March 29, 2020 (6 years ago).
What is r/projecthailmary about?
This community is dedicated to discussing Andy Weir's science fiction novel 'Project Hail Mary' and its themes, characters, and scientific concepts. Members engage deeply with the narrative, exploring topics such as astrophysics, biology, and the intricacies of the plot. The community is distinct for its blend of scientific inquiry and literary analysis, often leading to ric…
What subreddits are similar to r/projecthailmary?
Communities similar to r/projecthailmary include r/bobiverse, r/themartian, r/exfor, r/readyplayerone, r/expeditionaryforce.
Who are the most active posters on r/projecthailmary?
The most frequent posters on r/projecthailmary include u/ipecacOH, u/[deleted], u/JohnNelson2022.
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