r/spacex↗
r/SpaceX, the premier SpaceX discussion community
Welcome to r/SpaceX, the premier SpaceX discussion community and the largest fan-run board on the American aerospace company SpaceX. We recommend using r/SpaceX with Old Reddit. This board is not an official outlet for SpaceX information."
3.7M subscribers150 posts / mo in Sep 2026 (incl. ~1% by known bots)99 authors / mosince 2011
r/spacex has 3.7M members (+0.9% over the last 12 months). It gets about 150 posts a month from 99 people. Top topics: Space Exploration & Rockets, SpaceX Rockets and Crew Dragon Updates.
When to post on r/spacex
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How r/spacex has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/spacex
Top topics
Share of the subreddit's posts
- Space Exploration & Rockets3.7%
- SpaceX Rockets3.6%
- Crew Dragon Updates3.0%
- SpaceX Falcon 9 Launches2.5%
- SpaceX Launches2.5%
Brands people mention
Most-mentioned brands and sites, last 12 months
- NASA
- Substack
- Next Spaceflight
- Yahoo!
- xkcd
Everything else about r/spacex
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research