// SUBREDDIT_PROFILE
r/astrophysics
› The branch of astronomy concerned with the physical nature of stars and other celestial bodies, and the application of the laws and theories of physics to the interpretation of astronomical observations.
// MEMBERS
173,925
› subscribers
// POSTS_INDEXED
461
› analyzed records
// COMMUNITY_AGE
16y
› since 2010-01-16
// STATUS
[ok] active
› feed indexed
// QUICK_ACTIONS
// Recent posts in r/astrophysics
[ latest we indexed · by upvotes ]- 01 Slow mover in Rubin’s public alerts I can’t identify, and only a retrograde orbit fits it. Could I get an opinion? ↑ 92 · 2026-11-02
- 02 Getting into astrophysics ↑ 10 · 2026-11-02
- 03 Changing my major to astronomy, but which path should I take? ↑ 8 · 2026-11-04
- 04 Modelling Osculating orbital parameters using Rebound ↑ 6 · 2026-11-03
- 05 CS undergrad (3rd year) passionate about astrophysics: can I do a master’s in astro, and how should I prepare? ↑ 5 · 2026-11-03
// RELATED_COMMUNITIES
[ 12 communities · education & science ]
r/bible
› 180,314 members · 1,021 posts indexed
r/PasDeQuestionIdiote
› 177,253 members · 2,918 posts indexed
r/ancientegypt
› 176,620 members · 1,079 posts indexed
r/evolution
› 175,874 members · 505 posts indexed
r/awscertifications
› 175,822 members · 1,716 posts indexed
r/HistoryAnecdotes
› 175,011 members · 283 posts indexed
r/neuropsychology
› 173,455 members · 152 posts indexed
r/bigcats
› 170,730 members · 267 posts indexed
r/23andme
› 168,837 members · 1,930 posts indexed
r/timetravel
› 168,784 members · 774 posts indexed
r/bioinformatics
› 167,646 members · 802 posts indexed
r/MedievalHistory
› 166,281 members · 528 posts indexed
// FAQ [ 3 entries ]
01 › What is r/astrophysics about? [ expand ↓ ] [ collapse ↑ ]
r/astrophysics is a Reddit community with 173,925 members. The branch of astronomy concerned with the physical nature of stars and other celestial bodies, and the application of the laws and theories of physics to the interpretation of astronomical observations.
02 › How active is r/astrophysics? [ expand ↓ ] [ collapse ↑ ]
r/astrophysics has 173,925 subscribers and 461 posts in our index. It was created on 2010-01-16, 16 years ago.
03 › Which subreddits are similar to r/astrophysics? [ expand ↓ ] [ collapse ↑ ]
Other Education & Science communities of a similar size include r/bible (180,314 members), r/PasDeQuestionIdiote (177,253 members), r/ancientegypt (176,620 members), r/evolution (175,874 members). Each is listed with its own subscriber and post counts in the related communities section above.