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Explore space subreddits

Find the largest and most popular space subreddits on Reddit in 2026, ranked by number of members. Planets, stars and galaxies, rockets and spaceflight, NASA and SpaceX, telescopes and astrophotography. Popular subreddits include Space, Astronomy, Spacex and Astrophotography. Sort by daily posts to see where launch days are busiest. Our Reddit stats are always up to date

Categorized Space subreddits: 76Scanned subreddits: 125.166Subreddits waiting: 15
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Categorized Space subreddits: 76Scanned subreddits: 125.166Subreddits waiting: 15
RankSubredditMembers?Daily posts?Scanned?Growth?Age?Allowed?View and save subreddits
76FermiParadoxRules10.200N/A8 days ago+0.7%11 yearsSpaceText posts allowedLinks allowedPictures not allowedVideos allowedOpen galleryOpen
75statlightdiaries10.406N/A6 days ago+1.5%1 yearSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
74Astro_mobileRules10.582N/A9 days ago+3%3 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
73Solar_SystemRules11.256N/A8 days ago+3.3%11 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
72milkywayRules11.842N/A8 days ago+1%17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
71SpaceXStarshipRules11.971N/A14 days agoN/A7 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
70SspacequestionsRules12.014N/A8 days ago+1.1%13 yearsSpaceText posts allowedLinks not allowedPictures not allowedVideos not allowedOpen galleryOpen
69radioastronomy12.138N/A6 days ago+1.6%13 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
68SpaceMemesRules12.565N/A8 days ago+0.7%13 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
67venusRules12.703N/A9 days agoN/A17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
66ula13.459N/A4 days ago+0.2%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
65CColonizemars13.501N/A8 days ago+0.1%10 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
64stargazingporn13.656N/A8 days ago+1.8%9 monthsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
63telescope13.756N/A3 days ago+0.7%16 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
62kenyaspacenerds14.785N/A9 days agoN/A7 monthsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
61AstronomieRules14.939N/A6 days ago+0.6%5 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
60blackholes15.504N/A9 days ago+8.6%15 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
59exoplanets17.166N/A8 days ago+1.7%16 yearsSpaceText posts allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
58spaceshuttleRules17.369N/A8 days ago+2.2%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
57spaceweatherRules17.601N/A23 hours ago+1.9%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
56SSETIRules18.378N/A8 days ago+0.2%17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
55MarsSocietyRules18.780N/A8 days ago+0.7%15 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
54VirginGalacticRules19.519N/A8 days ago+0.1%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
53IntuitiveMachinesRules19.752N/A8 days ago+0.3%7 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
52SsatellitesRules20.772N/A8 days ago+1.8%16 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
51InSightLanderRules21.538N/A5 days ago+0%8 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
50SPCERules23.828N/A8 hours ago+0.2%6 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
49apollo24.389N/A11 hours ago+2%15 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
48AuroraBorealisRules24.608N/A13 hours ago+9.9%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
47ISS27.837N/A8 days ago+7.1%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
46SSpaceVideosRules30.126N/A38 hours ago+7%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
45PerseveranceRoverRules33.754N/A2 days ago+0.4%6 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
44SpaceLaunchSystemRules36.241N/A2 days ago+0.2%13 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
43seestar37.687N/A2 days ago+2.6%2 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
42Aamateurastronomy38.562N/A7 hours ago+1.8%17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
41amateursatellitesRules38.775N/A2 days ago+1.9%7 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
40Ccuriosityrover39.100N/A2 days ago+0.3%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
39esaRules39.829N/A2 days ago+0.9%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
38ItsAlwaysPleiadesRules40.163N/A2 days ago+2.2%2 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
37darksky41.117N/A2 days ago+2.1%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
36Spaceexploration41.238N/A2 days ago+2.8%13 yearsSpaceText posts allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
35RocketLabRules41.904N/A2 days ago+1.1%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
34nightskyporn42.530N/A31 mins ago+2.5%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
33AstronomyMemesRules42.680N/A54 mins ago+1.5%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
32spaceshipsRules44.072N/A4 hours ago+5.1%16 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
31northernlightsRules46.6140.511 hours ago+1.8%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
30spaceengineRules50.5816.219 hours ago+1%15 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
29BlueOriginRules53.1073.024 hours ago+0.8%13 yearsSpaceText posts allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
28SpaceUnfiltered55.7217.629 hours ago+6.5%1 yearSpaceText posts not allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
27ArtemisProgramRules65.1002.545 hours ago+0.4%7 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
26AskAstrophotographyRules67.4356.92 days ago+1.1%7 yearsSpaceText posts allowedLinks not allowedPictures not allowedVideos not allowedOpen galleryOpen
25sun68.1781.82 days ago+0.6%17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
24meteoritesRules71.1831.52 days ago+1.1%15 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
23Weltraum72.9943.32 days ago+0.4%11 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
22universe80.6463.02 days agoN/A17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
21StarshipPornRules99.8550.53 days ago+0.6%13 yearsSpaceText posts not allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
20MarsRules99.9104.03 days ago+1%18 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
19LLandscapeAstroRules106.3822.53 days ago+0.4%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
18SpaceXMasterrace109.6246.43 days ago+0.7%12 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
17jameswebbRules130.8571.84 days ago+0.3%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
16AaerospaceRules131.2326.64 days ago+1.4%18 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
15moonRules140.153354 days ago+0.5%18 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
14cosmologyRules144.0691.04 days ago+0.7%17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
13Stargazing155.994114 days ago+0.6%13 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
12astrophysicsRules173.2032.25 days ago+1.3%16 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
11AaskastronomyRules185.6459.05 days ago+1.2%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
10telescopesRules268.918235 days ago+0.5%18 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
9spaceflightRules315.8864.25 days ago+0.3%17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
8SpaceXLoungeRules385.4683.23 days ago+0.1%10 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
7ISRORules455.3772.16 days ago+0.1%14 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
6astrophotographyRules2.644.452254 days ago+0%17 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
5AstronomyRules3.154.900167 days ago+0.2%18 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
4spacexRules3.700.6721.45 days ago+0%15 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
3spacepornRules4.323.683117 days ago+0.1%15 yearsSpaceText posts not allowedLinks allowedPictures allowedVideos not allowedOpen galleryOpen
2nasaRules5.882.6193.67 days ago+0%18 yearsSpaceText posts allowedLinks allowedPictures allowedVideos allowedOpen galleryOpen
1spaceRules27.989.7309.86 days ago+0%18 yearsSpaceText posts allowedLinks allowedPictures not allowedVideos not allowedOpen galleryOpen