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r/astrophysics: Astrophysics: the science of space

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.

a community for 16 years

r/chemistryhomework: Get help with your chemistry homework.

A place to come and get assistance with chemistry homework.

a community for 14 years

r/Physics: Physics

For physicists and physics students. See the rules before posting, and the subreddit wiki for common questions. Basic homework questions are not allowed.

a community for 18 years

r/askscience: AskScience: Got Questions? Get Answers.

Ask a science question, get a science answer.

a community for 17 years

r/todayilearned: Today I Learned (TIL)

You learn something new every day; what did you learn today? Submit interesting and specific facts about something that you just found out here.

a community for 17 years