r/Astronomy

Science subreddit · 3M members

The amateur hobby of humanity since the dawn of time and scientific study of celestial objects.

— r/Astronomy sidebar description
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Members
3,015,721 (July 2025)
Size rank
#255 of 2,960 subreddits we track, larger than 91% of them
Topic
Science · #9 of 39 in Science
Address
reddit.com/r/Astronomy · how to join

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