r/Astronomy peaks Thursdays 1pm-3pm UTC
r/Astronomy was created on March 28, 2008, making it 18 years and 3 months old and one of the earliest subreddits on Reddit. With 3,114,683 members, this is a large and well-established subreddit with significant reach and influence on Reddit.
r/Astronomy is steadily growing, with 11,296 new members in the last 30 days.
r/Astronomy shows moderate engagement relative to its size, with an average of 340.8 upvotes per post across its 3,114,683 members. The community is primarily content-consumption focused, with a comment-to-upvote ratio of 0.02. To reach the Hot section of r/Astronomy, posts typically need at least 6 upvotes, reflecting the community's activity level.
Posts on r/Astronomy receive an average of 7.6 comments, indicating a community that primarily engages through upvoting content. Posts tend to be appreciated more through voting than through discussion in the comments.
Based on an analysis of 100 top posts from the past week, Thursday is the most active day with 19 posts reaching the top, while Wednesday sees the least activity with 8 posts. Activity is fairly evenly distributed between weekdays and weekends.
The peak posting hours are around 1pm UTC (10 posts), 2pm UTC (8 posts), and 5pm UTC (8 posts). The quietest hours are 8pm UTC, 1am UTC, and 7am UTC, with only 1-1 posts each reaching the top during these times.
Weekly breakdown: Monday (11), Tuesday (18), Wednesday (8), Thursday (19), Friday (16), Saturday (13), Sunday (15) posts reaching the top.
r/Astronomy currently has 3,114,683 subscribers. Over the past 30 days, the community has grown by 11,296 members (0.36%), averaging 364 new subscribers per day. This growth rate places r/Astronomy in the top 11% of all tracked subreddits.
Over the past 90 days, r/Astronomy has gained 36,995 subscribers (1.2%). Since tracking began 683 days ago, the community has added 182,810 total subscribers. Growth has been accelerating recently compared to the longer-term trend.
r/Astronomy is steadily growing, with 11,296 new members in the last 30 days.
r/Astronomy has 3,114,683 subscribers as of June 2026.
The best time to post on r/Astronomy is Thursdays 1pm-3pm UTC, based on analysis of top-performing posts from the past week.
r/Astronomy is steadily growing, with 11,296 new members in the last 30 days.
r/Astronomy was created on March 28, 2008, making it 18 years old.
Posts on r/Astronomy typically need at least 6 upvotes to reach the Hot section.
r/Astronomy is a Reddit community with 3,114,683 subscribers. The community describes itself as: "The amateur hobby of humanity since the dawn of time and scientific study of celestial objects." The best time to post on r/Astronomy is Thursdays 1pm-3pm UTC. Posts receive an average of 340.8 upvotes and 7.6 comments. The minimum upvotes needed to reach the Hot section is approximately 6. The subreddit is adding approximately 364 new members each day. Founded 18 years ago, r/Astronomy is tracked and analyzed by RedditList as part of its comprehensive database of over 106,360 subreddits.
Last updated: 2026-06-22 20:49:10