r/Astronomy

Community Overview
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About r/Astronomy

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

The community at a glance

r/Astronomy is a Subreddit for Astronomers with roughly 3.1M members. It uses a forum format for communication. It is the 1st largest community in the Astronomy topic page.

Roughly 112K members have joined in the past year. Popular discussion topics include Astronomy, Moon, and Nebula. Product recommendations often mention telescope and books.

On Reddit
3.1M Members

Community Topics

Community Features

Forum

This community has a forum

Subreddit Analysis

via GummySearch
Yearly: +112K members
Growth: +3.7% / year

Member growth over time

All time (yearly)

  • 2013: 27K members
  • 2014: 30K members
  • 2015: 18K members
  • 2016: 27K members
  • 2017: 95K members
  • 2018: 370K members
  • 2019: 431K members
  • 2020: 695K members
  • 2021: 462K members
  • 2022: 480K members
  • 2023: 194K members
  • 2024: 87K members
  • 2025: 77K members
  • 2026: 75K members

Past year (monthly)

  • Sep: 5K members
  • Oct: 6K members
  • Nov: 12K members
  • Dec: 9K members
  • Jan: 9K members
  • Feb: 8K members
  • Mar: 10K members
  • Apr: 16K members
  • May: 10K members
  • Jun: 11K members
  • Jul: 9K members
  • Aug: 2K members

Topics

  • Astronomy
    51 posts in the past month
    #1
    Astronomy
    51
  • Moon
    38 posts in the past month
    #2
    Moon
    38
  • Nebula
    37 posts in the past month
    #3
    Nebula
    37
  • Telescope
    35 posts in the past month
    #4
    Telescope
    35
  • Galaxy
    24 posts in the past month
    #5
    Galaxy
    24

Flair

  • Astrophotography (OC)
    111 posts in the past month
    1. My first decent Milky Way shots.
    2. My dream shot of M45 from my backyard [OC]
    3. Caldwell 30
    #1
    Astrophotography (OC)
    My first decent Milky Way shots. · My dream shot of M45 from my backyard [OC] · Caldwell 30
    111
  • Astro Research
    18 posts in the past month
    1. Astronomers catch massive galaxy assembling piece by piece 1.2 billion years after Big Bang
    2. Webb telescope reveals a surprisingly mature galaxy in the early Universe
    3. Added a 3D view to the CME Tracker coronal mass ejection visualizer
    #2
    Astro Research
    Astronomers catch massive galaxy assembling piece by piece 1.2 billion years after Big Bang · Webb telescope reveals a surprisingly mature galaxy in the early Universe · Added a 3D view to the CME Tracker coronal mass ejection visualizer
    18
  • Question (Describe all previous attempts to learn / understand)
    11 posts in the past month
    1. Unknown object captured in Northern Lights photos
    2. App that will let me track moon rise against local geography (for iPhone)
    3. I live in Atlanta and was wondering, are there any good places in the south that are good for Astronomy?
    #3
    Question (Describe all previous attempts to learn / understand)
    Unknown object captured in Northern Lights photos · App that will let me track moon rise against local geography (for iPhone) · I live in Atlanta and was wondering, are there any good places in the south that are good for Astronomy?
    11
  • Astro Art (OC)
    10 posts in the past month
    1. I captured the Milky Way arch in the Dolomites
    2. I made an electromechanical astrolabe!
    3. [oc] My space art. I love paintings nebula atp. Would love more works like this! Oil on canvas
    #4
    Astro Art (OC)
    I captured the Milky Way arch in the Dolomites · I made an electromechanical astrolabe! · [oc] My space art. I love paintings nebula atp. Would love more works like this! Oil on canvas
    10
  • Other: [Topic]
    10 posts in the past month
    1. PHYS.Org: A century-old stellar mystery may finally have an explanation
    2. An ‘Eclipse Season’ Begins Today — Here’s What’s About To Happen
    3. Nancy Grace Roman Space Telescope - NASA Science | "the Nancy Grace Roman Space Telescope will have a field of view at least 100 times larger than Hubble's, potentially measuring light from a billion galaxies in its lifetime"
    #5
    Other: [Topic]
    PHYS.Org: A century-old stellar mystery may finally have an explanation · An ‘Eclipse Season’ Begins Today — Here’s What’s About To Happen · Nancy Grace Roman Space Telescope - NASA Science | "the Nancy Grace Roman Space Telescope will have a field of view at least 100 times larger than Hubble's, potentially measuring light from a billion galaxies in its lifetime"
    10

Product recommendations

  • telescope
    10 posts in the past month
    1. Best beginner telescope?
    2. Can anyone recommend a telescope around €300 for a beginner?
    3. Just starting Astrophotography, Which telescope out of these would you recommend?
    #1
    telescope
    Best beginner telescope? · Can anyone recommend a telescope around €300 for a beginner? · Just starting Astrophotography, Which telescope out of these would you recommend?
    10
  • books
    6 posts in the past month
    1. Best astronomy books and recommendation☄🌌
    2. What books would you recommend to a novice who's interested in learning more about Astronomy?
    3. Recommend book for astronomy basic calculation
    #2
    books
    Best astronomy books and recommendation☄🌌 · What books would you recommend to a novice who's interested in learning more about Astronomy? · Recommend book for astronomy basic calculation
    6
View full analysis on GummySearchSynced 7/31/2026

Frequently asked questions

Who is r/Astronomy for?
Best for Astronomers enthusiasts looking for a Reddit-based community with forum discussion.
Is r/Astronomy free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/Astronomy have?
Roughly 3.1M members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/Astronomy on?
r/Astronomy runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/Astronomy cover?
On the Hive Index, r/Astronomy is organized under Astronomers.
How do I join r/Astronomy?
You can join r/Astronomy by clicking this link, or pressing the "Go to community" button above.
What are the Astronomy communities like?
Communities for space enthusiasts covering astronomy, astrophysics, astrophotography, and space exploration. Discord servers host newcomers and experts alike with dedicated channels for launches, telescope recommendations, and trivia, alongside Reddit communities for sharing images and discussing discoveries.
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Added 6/8/2023

Monthly Stats

8
Views /mo
(-27%)
6
Visitors /mo
(-14%)
0
Referrals /mo

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