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Reddit rules index · read 2026-10-13
Can you promote on r/Astronomy?
Self-promotion restricted Its rules restrict self-promotion. Posts that promote your own work are likely to be removed.
What this page is
This page quotes r/Astronomy's rules as ThreadFox read them on 2026-10-13. The quoted text is the community's; the verdict above is our reading of it. Conditions often decide whether a post fits (a required thread, flair, posting day, account age or karma), and r/Astronomy's current rules on Reddit always win over this page.
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- 3,152,263 members
- text and link posts
- its rules on Reddit
The amateur hobby of humanity since the dawn of time and scientific study of celestial objects.
What its rules say about promotion
Content
Rage comics, memes, infographics, apps, etc... are not allowed. Avoid multiple exclamation marks, excessive CAPS, or editorializing submission titles. Selling items, crowdfunding, etc... are prohibited. Look, we get it. Carl Sagan was a HUGE pothead. Post your stoner moments over at /r/woahdude/ Mods may remove any content that they feel do not feel fits the sub or it otherwise inappropriate.
All 10 rules of r/Astronomy
- Pictures & Videos
All astrophotos and videos submissions must be original content and include acquisition and processing information. Submissions must be **exceptional** quality. Astro art is allowed but does not need to meet the requirements of acquisition information but does need to be OC and meet quality requirements. See [this thread for more info](https://www.reddit.com/r/Astronomy/comments/fq44oo/read_the_rules_sub_before_posting) - Object Identification
If you are asking for help identifying an object you must first have referred to [this thread](https://www.reddit.com/r/Astronomy/comments/92zks3/), consulted the flow chart there, and used all tools linked in the [stickied comment](https://www.reddit.com/r/Astronomy/comments/92zks3/comment/e39kask/). If you are still unable to answer the question yourself, make sure you include a time, location, direction, and angle above the horizon. - Questions
Posts that ask questions that can be easily answered by a few minutes on Google/YouTube will be removed. To ensure your post is not removed, ask specific questions letting readers know what you have already learned/tried. Similarly posts that ask for subjective answers, lack necessary information to answer, asks for basic sources on topics (i.e., "What books/blogs should I read?") will be removed. We're here to help you learn - not to do your thinking or do your homework for you. - Telescope Help
Before asking questions about telescopes, please refer to [this thread](https://www.reddit.com/r/telescopes/comments/847n0i/for_anyone_posting_what_telescope_should_i_get). If you need additional help, try /r/Telescopes. See also the rules regarding Questions. - Content
Rage comics, memes, infographics, apps, etc... are not allowed. Avoid multiple exclamation marks, excessive CAPS, or editorializing submission titles. Selling items, crowdfunding, etc... are prohibited. Look, we get it. Carl Sagan was a HUGE pothead. Post your stoner moments over at /r/woahdude/ Mods may remove any content that they feel do not feel fits the sub or it otherwise inappropriate. - Behavior
All content should be on topic and respectful. We do not allow content which is cliche, low-brow, disrespectful, etc.... If you think a post violates sub rules, use the report or contact the moderators. Do not be abusive to the poster. - Sources
Primary or reputable secondary sources ONLY. Journalists with such sources are welcome to post links to articles. Spam bots are not. If posting a journal article (arXiv, etc.), you must offer commentary as a top level comment. ChatGPT and other AIs, YouTube, Medium, IFLS, and other sources of questionable and inconsistent quality are not allowed. - Repetition & Relevance
When posting news, please verify that the topic hasn't already been posted in the past few days. Submissions should be recent enough or historically significant enough to be relevant. Astronomy can be done in space but space flight is not astronomy. - Misinformation & Pseudoscience
/r/Astronomy is a science based sub. Pseudoscience (Creationism, Electric Universe, Flat Earthism, Ancient Aliens, Moon Landing conspiracy, etc...) will be removed. Similarly, this is not the place for half baked "theories", outlandish hypotheticals, or other misinformation. - Post Types
Submissions should make use of the appropriate submission type. I.e., Images and external links should not be placed in a text post.
What the written rules don't show
- Unpublished minimums. Many communities remove posts from new or low-karma accounts through AutoModerator settings that are not on the rules page, often before a moderator sees them.
- Reddit's own filters. Reddit's site-wide spam filters can remove posts from accounts that mostly share links to their own site, in any community.
- The community's norms. Many communities see themselves as peers, not an audience: post where you already take part, and make the post worth reading without the link.
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The verdict is our reading of r/Astronomy's rule text on 2026-10-13. Rules change and moderators decide: read the current rules before you post. Not affiliated with Reddit or r/Astronomy.