r/iss
A subreddit dedicated to the International Space Station.
How to think about r/iss
The community is dedicated to discussions, news, and updates about the International Space Station (ISS). Members share insights on various aspects of the ISS, including its scientific missions, technology, and the astronauts who inhabit it. The focus on real-time events and scientific advancements sets this community apart, fostering a space-centric dialogue that appeals to enthusiasts and professionals alike.
Confidence 4/5
Audience
Participants in this community are typically space enthusiasts, students, and professionals in the fields of science and engineering. The demographic skews towards a younger audience, often comprising individuals with a keen interest in space exploration and technology. Members engage with the content out of curiosity and a desire to learn more about the ISS and its contributions to science.
Posting culture
The posting culture emphasizes informative and well-researched content, with a preference for high-quality images, videos, and links to credible sources like NASA. Posts that are overly promotional or lack substance tend to be downvoted. Members appreciate detailed discussions and often engage in technical debates, making thoughtful contributions more likely to thrive. The community is active but not overly fast-paced, allowing for in-depth conversations.
Brand engagement notes
Brands looking to engage with this community should focus on providing educational content that aligns with the interests of space enthusiasts. Authenticity is key; overt promotional tactics are likely to be met with skepticism. Collaborations with scientists or educational initiatives that enhance understanding of space exploration can resonate well. Sharing behind-the-scenes insights or innovative technologies related to the ISS may also foster positive engagement.
Top keywords
What r/iss 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/Galileos_grandson
- u/liamkennedy
- u/TheMuseumOfScience
- u/intengineering
- u/spacewal
- u/radiotechca
- u/[deleted]
- u/Novosibirsk-Siberia
- u/Adeldor
- u/t0nito
- u/971Space
- u/AmandaJRRT
- u/Substantial_Foot_121
- u/SnooPeppers6719
- u/Ice_Pirate_Zeno
- u/ccamp026
- u/bskdany
- u/Thiago-Acko
- u/isny
- u/SpINKed
- u/northdoc
- u/flyhi524
- u/StewieMcFluffy
- u/Pmatt3773
- u/mrfancypopcorn
- u/brandmeist3r
- u/mmartute
- u/Hybrid-Supreme
- u/EorEquis
- u/Dalembert
- u/yandr001
- u/Asterlux
- u/HeroicLemming
- u/Other_Positive_9598
- u/Switch_B
- u/NarrowImplement1738
- u/ExtraneousJuror
- u/helloworld_live
- u/drcpanda
- u/AwesomeQuest
- u/Senior-Masterpiece29
- u/Tiny_Bus_3864
- u/Yaboimathijs077
- u/capaolo99
- u/timdosereddit
- u/Someladyinohio
- u/oregonedge
- u/Mike_Aurora_Trilogy
- u/Thiemenator
- u/Zestyclose_Industry6
- u/issgeopolitics
- u/hawthorneandsage
- u/Over-Procedure775
- u/theprofitablec
- u/N4BFR
- u/DelosBoard2052
- u/connjose
- u/PrincePaulSMamakos
- u/PhilipBroughtonMills
- u/Tony_sdr
- u/Freelance_Gawper
- u/Pokinalotasmot
- u/Mystery934740
- u/Dorothooth
- u/qtlt3
- u/No-Hearing1101
- u/veterinarysite
- u/Raf__cio
- u/Ok_Astronomer_1308
- u/greaselovely
- u/PaintedFoxStudiosTM
- u/Traditional_Sail_213
- u/nose_water_
- u/Duke--Nukem
- u/JournalistOk623
- u/Petawawa19
- u/AthanorBrew
- u/Any-Instruction6655
- u/Standard_Frame_7056
- u/avipars
- u/Sn00pert
- u/Curlyjankens
- u/TechieBrad
- u/saquonbrady
- u/lirecela
- u/Final-Map-4009
- u/KroggRage
- u/YodaRules1951
- u/_Investigator9435
- u/DrSchwanz
- u/Lina4469
- u/Zealousideal_Cup_729
- u/Significant_Bear_190
- u/Rare-Act-4362
- u/That-Swan-7464
By votes
- u/Galileos_grandson
- u/liamkennedy
- u/spacewal
- u/TheMuseumOfScience
- u/ccamp026
- u/[deleted]
- u/bskdany
- u/Thiago-Acko
- u/isny
- u/Adeldor
- u/SpINKed
- u/northdoc
- u/flyhi524
- u/Novosibirsk-Siberia
- u/StewieMcFluffy
- u/971Space
- u/t0nito
- u/Pmatt3773
- u/mmartute
- u/Hybrid-Supreme
- u/mrfancypopcorn
- u/brandmeist3r
- u/yandr001
- u/AmandaJRRT
- u/EorEquis
- u/Dalembert
- u/SnooPeppers6719
- u/intengineering
- u/Asterlux
- u/HeroicLemming
- u/Switch_B
- u/Other_Positive_9598
- u/ExtraneousJuror
- u/AwesomeQuest
- u/NarrowImplement1738
- u/drcpanda
- u/Senior-Masterpiece29
- u/Tiny_Bus_3864
- u/helloworld_live
- u/Yaboimathijs077
- u/Substantial_Foot_121
- u/timdosereddit
- u/capaolo99
- u/Thiemenator
- u/Someladyinohio
- u/oregonedge
- u/Mike_Aurora_Trilogy
- u/issgeopolitics
- u/Zestyclose_Industry6
- u/Over-Procedure775
- u/theprofitablec
- u/N4BFR
- u/PrincePaulSMamakos
- u/hawthorneandsage
- u/DelosBoard2052
- u/PhilipBroughtonMills
- u/Mystery934740
- u/radiotechca
- u/connjose
- u/Tony_sdr
- u/Freelance_Gawper
- u/Pokinalotasmot
- u/Dorothooth
- u/qtlt3
- u/No-Hearing1101
- u/veterinarysite
- u/Ok_Astronomer_1308
- u/Ice_Pirate_Zeno
- u/Raf__cio
- u/greaselovely
- u/PaintedFoxStudiosTM
- u/Traditional_Sail_213
- u/nose_water_
- u/Duke--Nukem
- u/JournalistOk623
- u/Petawawa19
- u/AthanorBrew
- u/Any-Instruction6655
- u/Standard_Frame_7056
- u/avipars
- u/Sn00pert
- u/Curlyjankens
- u/TechieBrad
- u/saquonbrady
- u/lirecela
- u/Final-Map-4009
- u/KroggRage
- u/YodaRules1951
- u/_Investigator9435
- u/DrSchwanz
- u/Lina4469
- u/Zealousideal_Cup_729
- u/Significant_Bear_190
- u/Rare-Act-4362
- u/That-Swan-7464
Top commenters
By comment count
- u/[deleted]
- u/xeneks
- u/mistahclean123
- u/liamkennedy
- u/n4ppyn4ppy
- u/Thiago-Acko
- u/Spicy_Tindies
- u/thenumber1326
- u/FunZebra0
- u/capaolo99
- u/beminlv
- u/IceViper777
- u/First-Long-7694
- u/Jajakomopowers
- u/outjet
- u/uberbla123
- u/artgreendog
- u/adjustedcomet
- u/jordylu1007
- u/valueinvestr
- u/zrxrider
- u/moboater1
- u/FishofApril
- u/04granite
- u/YoungOveson
- u/mikkokilla
- u/northdoc
- u/halifaxbc
- u/mrfancypopcorn
- u/skywatcher_usa
- u/NestTbe
- u/wazzyo21
- u/there_be_dragons08
- u/ShinyNickel05
- u/DumbWalrusNoises
- u/Jermine1269
- u/V3_NoM
- u/bshef
- u/Cziri77
- u/AmandaJRRT
- u/Delicious-Day-3332
- u/brandmeist3r
- u/ManyFacedGodxxx
- u/Apophyx
- u/wdwerker
- u/mazer933
- u/space-geek-87
- u/losandreas36
- u/fortgla
- u/WhatAmIATailor
- u/seasuighim
- u/EorEquis
- u/enieffak
- u/Fonzie1225
- u/CeleryStickBeating
- u/dDanys
- u/that_planetarium_guy
- u/ricardortega00
- u/PhreakofNature
- u/KyleTwin
- u/N4BFR
- u/Hadleys158
- u/Resident-Employ
By votes
- u/Apophyx
- u/thenumber1326
- u/FunZebra0
- u/mistahclean123
- u/there_be_dragons08
- u/wazzyo21
- u/xeneks
- u/liamkennedy
- u/Jajakomopowers
- u/[deleted]
- u/ShinyNickel05
- u/that_planetarium_guy
- u/outjet
- u/valueinvestr
- u/capaolo99
- u/zrxrider
- u/beminlv
- u/n4ppyn4ppy
- u/Thiago-Acko
- u/mazer933
- u/uberbla123
- u/northdoc
- u/DumbWalrusNoises
- u/wdwerker
- u/halifaxbc
- u/ricardortega00
- u/PhreakofNature
- u/KyleTwin
- u/Spicy_Tindies
- u/adjustedcomet
- u/jordylu1007
- u/moboater1
- u/FishofApril
- u/04granite
- u/mikkokilla
- u/mrfancypopcorn
- u/Jermine1269
- u/V3_NoM
- u/bshef
- u/brandmeist3r
- u/WhatAmIATailor
- u/EorEquis
- u/N4BFR
- u/Hadleys158
- u/Resident-Employ
- u/IceViper777
- u/First-Long-7694
- u/artgreendog
- u/YoungOveson
- u/skywatcher_usa
- u/NestTbe
- u/Cziri77
- u/AmandaJRRT
- u/Delicious-Day-3332
- u/ManyFacedGodxxx
- u/space-geek-87
- u/losandreas36
- u/fortgla
- u/seasuighim
- u/enieffak
- u/Fonzie1225
- u/CeleryStickBeating
- u/dDanys
Similar communities
Where this audience also spends time
Topic-adjacent communities surfaced from Reddit's own related subreddit signal.
FAQ
r/iss — frequently asked questions
Quick facts about this subreddit's size, history, focus, and related communities.
How many subscribers does r/iss have?
r/iss has approximately 17,083 subscribers as of May 27, 2026.
When was r/iss created?
r/iss was created on July 12, 2012 (14 years ago).
What is r/iss about?
The community is dedicated to discussions, news, and updates about the International Space Station (ISS). Members share insights on various aspects of the ISS, including its scientific missions, technology, and the astronauts who inhabit it. The focus on real-time events and scientific advancements sets this community apart, fostering a space-centric dialogue that appeals to…
What subreddits are similar to r/iss?
Communities similar to r/iss include r/spacelaunchsystem, r/ula, r/spaceshuttle, r/spaceflight, r/spaceexploration.
Who are the most active posters on r/iss?
The most frequent posters on r/iss include u/Galileos_grandson, u/liamkennedy, u/TheMuseumOfScience.
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