r/space is a subreddit with 27.9M members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses space, worst, looking for, looking, and nasa, and they frequently recommend/review documentaries and telescope.
Share & discuss informative content on:
* Astrophysics
* Cosmology
* Space Exploration
* Planetary Science
* Astrobiology
Popular Themes in r/space
#1
Advice Requests
: "What moment in uncrewed space exploration do you think deserves more recognition than it gets?"
5 posts
#2
Solution Requests
: "I made an Android app that can set your background to random daily NASA sources (mostly)"
2 posts
#3
Ideas
: "I made a website to visualize satellites and the solar system to scale"
1 post
#4
Self-Promotion
: "I built a free universe explorer for your browser. Travel anywhere in space and time: ride Voyager 2 past Neptune, stand on the Moon, watch the 2026 total eclipse from your city. No sign-up, no ads, no tracking."
1 post
#5
News
: ""Russia appears set to finally address long-term, serious space station cracks""
1 post
Popular Topics in r/space
#1
Space
58 posts
#2
Worst
17 posts
#3
Looking For
14 posts
#4
Looking
14 posts
#5
Nasa
10 posts
#6
Struggling
10 posts
#7
Mars
8 posts
#8
Documentary
7 posts
#9
Telescope
6 posts
#10
Universe
6 posts
Products Discussed in r/space
Documentaries
28 reviews
#1
Cosmos
4.6★ from 5 reviews
#2
YouTube
5.0★ from 2 reviews
#3
BBC
5.0★ from 2 reviews
Telescope
4 reviews
#1
EduSnap 2-in-1 Smart Telescope
4.0★ from 1 review
#2
Seestar S50
5.0★ from 1 review
#3
Ursa Major
4.0★ from 1 review
Flair Used in r/space
#1
Discussion
: "The sheer size of cosmic voids: If our Milky Way galaxy were inside the Bootes Void, we wouldn't have known other galaxies existed until the 1960s."
40 posts
#2
image/gif
: "Photo of Earth taken by Reid Wiseman with an iPhone, during Artemis ll mission"
24 posts
Member Growth in r/space
Yearly
+117k members(0.4%)
Similar Subreddits to r/space
r/askastronomy
172k members
38.9% / yr
r/Astronomy_Help
3k members
33.1% / yr
r/Damnthatsinteresting
20.5M members
3.2% / yr
r/nasa
5.9M members
1.0% / yr
r/science2
15k members
113.9% / yr
r/Spaceexploration
38k members
14.2% / yr
r/SpaceUnfiltered
46k members
541.5% / yr
r/spacex
3.7M members
0.2% / yr
r/VectorspaceAI
3k members
6.0% / yr
About
GummySearch helps people research Reddit communities by organizing activity, growth, themes, and post-level signals into one place.
This page gives a focused view of r/space, including current member size, discussion patterns, product reviews, and related communities to explore.
This data is synced periodically so insights stay current and useful for ongoing research.
Last updated: June 30, 2026