- Subscribers
- 21,392
- Average Upvotes
- 488.5
- Average Comments
- 5.8
- Min. Upvotes to HOT
- 2
r/ISS
Best Time to Post on r/ISS (UTC TIME)
r/ISS peaks Wednesdays 3am-5am UTC
ISS Subscriber Count - redditli.st
About r/ISS
r/ISS was created on July 12, 2012, making it 14 years old and one of the older subreddits on Reddit. With 21,392 members, this is a growing community that has moved beyond the niche stage and attracts regular new members.
r/ISS is experiencing strong growth, with 2,715 new members in the last 30 days.
r/ISS Engagement Analysis
r/ISS shows very high engagement relative to its size, with an average of 488.5 upvotes per post across its 21,392 members. The community is primarily content-consumption focused, with a comment-to-upvote ratio of 0.01. To reach the Hot section of r/ISS, posts typically need at least 2 upvotes, reflecting the community's activity level.
Posts on r/ISS receive an average of 5.8 comments, indicating a community that primarily engages through upvoting content. Posts tend to be appreciated more through voting than through discussion in the comments.
r/ISS Growth Analysis
r/ISS currently has 21,392 subscribers. Over the past 30 days, the community has grown by 2,715 members (14.54%), averaging 85 new subscribers per day. This growth rate places r/ISS in the top 0% of all tracked subreddits.
Over the past 90 days, r/ISS has gained 3,624 subscribers (20.4%). Since tracking began 628 days ago, the community has added 10,360 total subscribers. The recent growth rate is consistent with the community's longer-term trajectory.
r/ISS Milestones
- Fastest growth period: +1,828 subscribers Jul 2026
r/ISS Growth Trend
r/ISS is experiencing strong growth, with 2,715 new members in the last 30 days.
Frequently Asked Questions
How many subscribers does r/ISS have?
r/ISS has 21,392 subscribers as of July 2026.
What is the best time to post on r/ISS?
The best time to post on r/ISS is Wednesdays 3am-5am UTC, based on analysis of top-performing posts from the past week.
Is r/ISS growing?
r/ISS is experiencing strong growth, with 2,715 new members in the last 30 days.
When was r/ISS created?
r/ISS was created on July 12, 2012, making it 14 years old.
How many upvotes do you need to reach Hot on r/ISS?
Posts on r/ISS typically need at least 2 upvotes to reach the Hot section.
r/ISS Key Statistics Summary
r/ISS is a Reddit community with 21,392 subscribers. The community describes itself as: "A subreddit dedicated to the International Space Station." The best time to post on r/ISS is Wednesdays 3am-5am UTC. Posts receive an average of 488.5 upvotes and 5.8 comments. The minimum upvotes needed to reach the Hot section is approximately 2. The subreddit is adding approximately 85 new members each day. Founded 14 years ago, r/ISS is tracked and analyzed by RedditList as part of its comprehensive database of over 106,366 subreddits.
Compare r/ISS
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Last updated: 2026-07-21 22:45:25