r/SpaceLaunchSystem↗
Space Launch System
Discussion on the NASA Space Launch System and Orion MPCV program.
36k subscribers7 posts / mo in Sep 20267 authors / mosince 2013
r/SpaceLaunchSystem has 36k members (+12% over the last 12 months). It gets about 7 posts a month from 7 people. Top topics: SLS Artemis Launch, Artemis Missions and Rocket Engines.
When to post on r/SpaceLaunchSystem
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How r/SpaceLaunchSystem has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/SpaceLaunchSystem
Top topics
Share of the subreddit's posts
- SLS Artemis Launch23%
- Artemis Missions15%
- Rocket Engines2.8%
- Lunar Lander Programs2.3%
- Launch Delays and Weather1.0%
Brands people mention
Most-mentioned brands and sites, last 12 months
- NASA
- SAM
- Boeing
- Bluesky Social
Everything else about r/SpaceLaunchSystem
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