r/cosmology subreddit icon
Active

r/cosmology

**/r/cosmology** - a community for questions, discussions, and articles about cosmology.

Subscribers

129,376

Created

August 29, 2009

17 years ago

View on Reddit
RedPulse insight

How to think about r/cosmology

This community is dedicated to the study and discussion of cosmology, encompassing topics such as the universe's origins, structure, and evolution. Members engage in asking questions, sharing articles, and discussing theories related to the cosmos. Its distinct focus on cosmology, as opposed to broader astrophysics or physics topics, fosters a specialized environment for enthusiasts and professionals alike.

Confidence 4/5

  • Audience

    Participants range from amateur astronomers and students to professionals in the field of physics and cosmology. The community attracts individuals who are curious about the universe, eager to learn, and interested in engaging with complex scientific concepts. The vibe is generally respectful and inquisitive, with members valuing thoughtful discourse and evidence-based discussions.

  • Posting culture

    Content that thrives includes well-researched questions, insightful discussions, and articles that contribute to the understanding of cosmology. Posts that lack scientific rigor or are overly simplistic may receive downvotes. Members typically post with a focus on clarity and depth, and the community encourages regular contributions, fostering a steady flow of discussions and inquiries.

  • Brand engagement notes

    Brands looking to engage with this community should prioritize education over promotion. Sharing informative content, such as articles or research findings related to cosmology, can resonate well. However, overt promotional tactics are likely to be met with skepticism or hostility. Brands should aim to contribute meaningfully to discussions and respect the community's focus on scientific inquiry, avoiding any appearance of self-promotion.

Similar communities

Where this audience also spends time

Topic-adjacent communities surfaced from Reddit's own related subreddit signal.

FAQ

r/cosmology — frequently asked questions

Quick facts about this subreddit's size, history, focus, and related communities.

How many subscribers does r/cosmology have?

r/cosmology has approximately 129,376 subscribers as of May 27, 2026.

When was r/cosmology created?

r/cosmology was created on August 29, 2009 (17 years ago).

What is r/cosmology about?

This community is dedicated to the study and discussion of cosmology, encompassing topics such as the universe's origins, structure, and evolution. Members engage in asking questions, sharing articles, and discussing theories related to the cosmos. Its distinct focus on cosmology, as opposed to broader astrophysics or physics topics, fosters a specialized environment for ent…

What subreddits are similar to r/cosmology?

Communities similar to r/cosmology include r/astrophysics, r/askastronomy, r/askphysics, r/physics, r/quantumphysics.

Ready to engage on r/cosmology?

Authentic engagement, not spam.

RedPulse runs Reddit campaigns the way the platform actually rewards — high-karma accounts, native conversations, and content moderators welcome.