Best Science & Education Subreddits
Science on Reddit works on two levels. r/science shares new research papers under strict rules, while r/askscience lets anyone ask a question and get an answer from people who actually work in the field.
From there the category branches by discipline: space and astronomy, physics, biology, chemistry, math and psychology all have their own communities. The education side covers history and philosophy, plus subs for people who are actively learning a language, learning to code or just trying to study more consistently.
This list mixes the big science hubs with subject communities and learning subs, so it suits both curious readers and students.
At a glance
This list covers 15 communities with a combined 167,474,210 members. The largest is r/science (34,470,477), the smallest r/Astronomy (3,122,993). 15 of 15 are work-safe. Subscriber counts come from the public Reddit API and were refreshed on 2026-10-24; the full category has 2,165 communities.
| Subreddit | Members | Rating |
|---|---|---|
| r/science | 34,470,477 | SFW |
| r/askscience | 26,302,683 | SFW |
| r/space | 27,931,472 | SFW |
| r/Physics | 3,234,893 | SFW |
| r/biology | 5,470,242 | SFW |
| r/chemistry | 3,872,043 | SFW |
| r/math | 3,958,467 | SFW |
| r/psychology | 4,890,018 | SFW |
| r/Astronomy | 3,122,993 | SFW |
| r/nasa | 5,869,787 | SFW |
| r/history | 18,727,683 | SFW |
| r/philosophy | 18,556,295 | SFW |
| r/learnprogramming | 4,388,584 | SFW |
| r/languagelearning | 3,382,707 | SFW |
| r/GetStudying | 3,295,866 | SFW |
New research shared and discussed, usually with a link to the original study. Join if you want science news that stays close to the papers.
Ask a science question and get answers from people with real expertise, under strict moderation. Great for curious minds who want accurate explanations.
Space news, mission updates, launches and astronomy photos. A good general feed for anyone fascinated by what is beyond our planet.
Discussion of physics news, concepts and research, from classical mechanics to cosmology. Best for students and enthusiasts who enjoy going deeper.
A community for biology in all its forms: research, odd organisms and identification questions. Suits students and nature lovers alike.
Chemistry questions, lab photos, reactions and career talk. Worth joining if you study chemistry or just like seeing reactions explained.
Discussion of mathematics beyond homework: interesting problems, ideas and the culture of the field. Good for anyone who enjoys mathematical thinking.
Research and discussion about the human mind and behaviour. Useful for students and readers interested in how people think and act.
Astronomy discussion, observing tips and photos taken by members. Join if you own a telescope or would like to start stargazing.
A community about NASA missions, history and imagery. Perfect if you follow space exploration and want the agency's news in one place.
Serious discussion of historical events, periods and sources. Good for history buffs who like substantive conversation over trivia.
Philosophical questions, arguments and thinkers, from ethics to the philosophy of mind. Join if you enjoy careful debate about big ideas.
The go-to sub for people learning to code, full of beginner-friendly questions and resource advice. Start here if you are writing your first programs.
Learners of all languages sharing methods, resources and progress. Helpful whether you are starting a new language or stuck at intermediate level.
Study tips, focus techniques and motivation from students around the world. Good for anyone who wants to build a steadier study routine.
We picked large, active communities with a clear scientific or educational focus and favoured subs where answers tend to be accurate and well sourced. More are in our Science & Education category.