r/Astronomy
r/Astronomy is a Science & Education community on Reddit with 3,122,993 members, ranking #23 of 2,165 in Science & Education. The amateur hobby of humanity since the dawn of time and scientific study of celestial objects.
How big is r/Astronomy?
Created in 2008, r/Astronomy has had over a decade to grow and is a major community by Reddit standards. Within Science & Education it ranks #23 of 2,165 communities we track — the top 1.1% of the category by subscriber count. That puts it about 1,547× the median Science & Education subreddit, which has 2,019 members. It is a work-safe community with no 18+ flag on Reddit.
For scale, the largest Science & Education community we track is r/science with 34,470,477 members — roughly 11 times the size of r/Astronomy. Reddit itself launched in 2005, so a subreddit created in 2008 sits in the early wave of community building on the platform. Subscriber counts indicate reach, not activity — a large community can be quiet, and a smaller one busy. Open r/Astronomy on Reddit to see how often people actually post before deciding whether it is worth joining.
| Members | 3,122,993 |
|---|---|
| Category | Science & Education |
| Rank in category | #23 of 2,165 |
| Created | 2008 |
| Category median size | 2,019 members |
| Content rating | Work-safe (SFW) |
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Subscriber counts come from the public Reddit API and are refreshed when this directory is rebuilt. Redditory is not affiliated with Reddit Inc.