About r/aliens
In its own words:
A community dedicated to discussing alien life through news, experiences, speculation and investigation. Please keep content related to extra-terrestrials or non-human intelligence behind the UAP phenomenon.
Community guide
r/aliens (#655, about 1.6 million subscribers) is oriented around: A community dedicated to discussing alien life through news, experiences, speculation and investigation. Please keep content related to extra-terrestrials or non-human intelligence behind the UAP phenomenon. Recent activity samples show 42 posts/day in recent samples (~33% text, ~30% video, ~18% link). Public rules we collected include: Be Respectful; Stay On-Topic; Be Substantive; Not Quality Content; No Politics.
What belongs here
Stay inside the room’s stated scope rather than adjacent off-topic dumps. Self-promotion and ads are limited—read those rules before linking your own work. Low-effort memes/empty shitposts are often removed—add real context.
How it differs from lookalikes
Prefer this room when your post matches its description and rule list—not merely a larger sibling community. The public rule list is long enough that skimming all entries once beats assuming defaults from similar subs.
Practical pointers
Read the live sidebar/rules before posting; collected snapshots can lag. Common flairs in samples include: Video, Discussion :table:, Image 📷, Historical.
SubMouse Editorial
The community was created on Aug 4, 2008, which makes it 18 years old. Since Oct 26, 2026, it has gained 2,232 subscribers (+0.14%). It sits just behind r/deadbydaylight (#654) and ahead of r/childfree (#656) in our ranking.
What sets r/aliens apart
It is a discussion-heavy community, with about 26.9 comments per post over its lifetime versus a Top 100 median of 13.1. It is also one of the faster-growing big communities: its 1.53% gain since Sep 19, 2026 beats 98% of the Top 100. Its rhythm is strongly tied to time zones: the busiest hour (17:00 UTC) sees about 5.3× as many posts as the quietest (10:00 UTC).
Subscriber growth
Between Sep 19, 2026 and Nov 2, 2026, r/aliens went up from 1,589,368 to 1,613,637 subscribers (+24.3K, +1.53%). That is about 552 new members per day. The chart uses our weekly snapshots (9 so far), so it gets longer every week.
What r/aliens talks about
Looking at the titles of 196 recent posts (Oct 29–Nov 5), the words that come up most are “ufo”, “alien”, “disclosure”, “encounter” and “footage”. Other frequent themes are government, life, earth, photograph, fermi and paradox. Recurring phrases include “fermi paradox”, “alien encounter”, “ufo disclosure” and “intelligent life”. By format, 33% are text posts, 30% are videos and 18% are links.
Popular post flairs: Video (46), Discussion :table: (26), Image 📷 (24), Historical (19), News :illuminati: (15), Evidence :upvote: (14).
Activity and best time to post
r/aliens gets about 42 new posts a day. The public archive holds 154,316 posts and 4,152,150 comments in total, about 26.9 comments per post. Last week the busiest day was Saturday (48 posts) and the quietest was Tuesday (19). Posting peaks around 17:00 UTC and is lowest around 10:00 UTC.
Rules of r/aliens
The moderators of r/aliens list 15 rules. In short:
- Be Respectful
- Stay On-Topic
- Be Substantive
- Not Quality Content
- No Politics
- No Religious Dicussions/Debates
- No Off-Topic Conspiracies
- No Organizing/Calls for Protest
- No Abduction Marks
- No Mind-Altering Substances
How to join
Open reddit.com/r/aliens and press “Join”. Read the community rules in the sidebar before you post: every subreddit is run by its own volunteer moderators.
Frequently asked questions
How many members does r/aliens have?
r/aliens has 1,613,637 subscribers (Nov 2, 2026), which makes it the #655 safe-for-work subreddit in the SubMouse ranking. It added 24,269 members between Sep 19, 2026 and Nov 2, 2026.
When was r/aliens created?
r/aliens was created on Aug 4, 2008, so it has been around for 18 years. The oldest post in the public archive is from Mar 1, 2009.
Is r/aliens still active?
Yes. r/aliens gets about 42 new posts a day (average of the last four weeks). Over its lifetime the archive counts 154,316 posts and 4,152,150 comments. In a sample of 196 recent posts we counted 144 different authors.
What is the best time to post in r/aliens?
Based on post counts from Oct 29, 2026 to Nov 4, 2026, the busiest day was Saturday and the quietest Tuesday, and most posts arrive around 17:00 UTC, with the fewest around 10:00 UTC. More posts also means more competition, so a quieter hour can help a post get noticed.
What kind of posts are on r/aliens?
The community describes itself as: “A community dedicated to discussing alien life through news, experiences, speculation and investigation. Please keep content related to extra-terrestrials or non-human intelligence behind the UAP phenomenon.” Recent post titles often mention ufo, alien, disclosure, encounter and footage. Most posts are text posts (33%).
Is r/aliens SFW?
Yes. Reddit does not mark r/aliens as an 18+ (NSFW) community. SubMouse lists safe-for-work subreddits only.
What are the rules of r/aliens?
Join the community on Reddit first, then use “Create post”. r/aliens accepts both text and link posts, with images, videos and galleries enabled. It has 15 posted rules, starting with: “Be Respectful”; “Stay On-Topic”; “Be Substantive”. Moderators remove posts that break the rules, so read them in the sidebar before posting.
What subreddits are similar to r/aliens?
Communities with similar topics include r/UFOs (4.2M), r/artificial (1.4M), r/FunnyAnimals (8.7M), r/FanTheories (3M) and r/london (1.6M).
Stats from public data (data updated Nov 2, 2026; activity, rules and archive totals via the Arctic Shift archive, Nov 6, 2026). Point and comment counts are archive snapshots and can be lower than on Reddit today. SubMouse is an independent directory and is not affiliated with Reddit or the moderators of r/aliens.