r/esa↗
European Space Agency
r/esa provides the latest news, events, mission facts and a platform for discussion about ESA, the European Space Agency, and its projects. Please keep your posts related to the subject of space and/or ESA.
40k subscribers73 posts / mo in Sep 2026 (incl. ~1% by known bots)38 authors / mosince 2012
r/esa has 40k members (+22% over the last 12 months). It gets about 73 posts a month from 38 people. Top topics: Weather Satellites, Space Exploration Engineering and Rosetta Comet Mission.
When to post on r/esa
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How r/esa has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/esa
Top topics
Share of the subreddit's posts
- Weather Satellites2.3%
- Space Exploration Engineering1.6%
- Rosetta Comet Mission0.9%
- Moon Exploration & Development0.8%
- Satellite Technology & Launch Updates0.7%
Brands people mention
Most-mentioned brands and sites, last 12 months
- European Space Agency
- NASA
- Bluesky Social
- Space
Everything else about r/esa
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