r/askastronomy
184k members
r/askastronomy is a subreddit with 184k members. The community frequently discusses astronomy, sky, stars, moon, and space, and they frequently recommend/review telescope and cameras, and the most common flair used is astronomy , what did i see?, sci-fi, planetary science, and astrophysics.
For your astronomy-related questions and content!
Popular Topics in r/askastronomy
#1
Astronomy
53 posts
#2
Sky
41 posts
#3
Stars
31 posts
#4
Moon
29 posts
#5
Space
25 posts
#6
Telescope
24 posts
#7
Star
23 posts
#8
Planets
17 posts
#9
Object
17 posts
#10
What
17 posts
Products Discussed in r/askastronomy
Flair Used in r/askastronomy
#1
Astronomy
: "With billions of galaxies out there, do you think we are really alone?"
23 posts
#2
What did I see?
: "Meteor in Miamisburg tonight? Anyone see this?"
7 posts
#3
Sci-Fi
: "How would the view look like from the galactic center look like?"
5 posts
#4
Planetary Science
: "Do all rocky planets have tectonic plates, or is that something moreso specific to the Earth? Also, do gas planets have anything like the tectonic plates that Earth has itself (or other rocky planets might have themselves)?"
4 posts
#5
Astrophysics
: "How many stars fall beyond the Cosmological Event Horizon per year (or per second)?"
3 posts
#6
Cosmology
: "What are the chances of humankind (in any futuristic shape or form) surviving big threats of the universe like Red Giant, or one of the three major theoretical ends of the universe (heat death, rip, crunch)?"
2 posts
#7
Black Holes
: "Okay so I was Thinking"
2 posts
Member Growth in r/askastronomy
Yearly
+54k members(41.1%)
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Last updated: October 2, 2026