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. On the Hive Index it ranks #5 in the Astronomy communities list.

Roughly 123K members have joined in the past year. Popular discussion topics include Astronomy, Telescope, and Looking For. 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: +123K members
Growth: +4.1% / 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: 96K members

Past year (monthly)

  • 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: 16K members
  • Sep: 7K members
  • Oct: 125 members

Topics

  • Astronomy
    52 posts in the past month
    #1
    Astronomy
    52
  • Telescope
    20 posts in the past month
    #2
    Telescope
    20
  • Looking For
    17 posts in the past month
    #3
    Looking For
    17
  • Stars
    13 posts in the past month
    #4
    Stars
    13
  • Struggling
    12 posts in the past month
    #5
    Struggling
    12

Flair

  • Astrophotography (OC)
    69 posts in the past month
    1. That’s Not the Moon. I Photographed the Planet Venus Setting Behind Seattle’s Space Needle Last Night. There Was No Composition Done For This Image.
    2. Slept in my car near the Tetons to get this Milky Way shot
    3. Venus with Milky Way, seen from the International Space Station
    #1
    Astrophotography (OC)
    That’s Not the Moon. I Photographed the Planet Venus Setting Behind Seattle’s Space Needle Last Night. There Was No Composition Done For This Image. · Slept in my car near the Tetons to get this Milky Way shot · Venus with Milky Way, seen from the International Space Station
    69
  • Discussion: [Topic]
    15 posts in the past month
    1. I am so glad I am alive, right now, at this time for astronomy and space
    2. Brian Cox's Emergence - Short Review
    3. Would it have been possible for life to exist 8 billion years ago?
    #2
    Discussion: [Topic]
    I am so glad I am alive, right now, at this time for astronomy and space · Brian Cox's Emergence - Short Review · Would it have been possible for life to exist 8 billion years ago?
    15
  • Astro Art (OC)
    13 posts in the past month
    1. I made a fully procedural Gas Giant with Blender 3d - No AI
    2. Celestial migration (butterfly lift-off), acrylic on canvas
    3. Stained glass of the dwarf planet Makemake, featuring Makemake the cat
    #3
    Astro Art (OC)
    I made a fully procedural Gas Giant with Blender 3d - No AI · Celestial migration (butterfly lift-off), acrylic on canvas · Stained glass of the dwarf planet Makemake, featuring Makemake the cat
    13
  • Astro Research
    10 posts in the past month
    1. Astronomers have confirmed that one of the fastest-changing stars ever observed has entered a new stage of its evolution, offering a rare opportunity to watch a star's life unfold on human timescales.
    2. NASA-JAXA XRISM Mission Sees Pulsar Gathering Companion’s ‘Wind’ - NASA Science
    3. Extragalactic Planetary Nebula with Massive Progenitor Sheds Light on Stellar Evolution
    #4
    Astro Research
    Astronomers have confirmed that one of the fastest-changing stars ever observed has entered a new stage of its evolution, offering a rare opportunity to watch a star's life unfold on human timescales. · NASA-JAXA XRISM Mission Sees Pulsar Gathering Companion’s ‘Wind’ - NASA Science · Extragalactic Planetary Nebula with Massive Progenitor Sheds Light on Stellar Evolution
    10
  • Question (Describe all previous attempts to learn / understand)
    9 posts in the past month
    1. NASA's Best API for Simulating Orbits and Trajectories
    2. How to find a planet during daylight? (Ex. Crescent Venus )
    3. What if all space is already empty/everything gone, and we only see its remnant light because of the limit of the speed of light and we only look at the past?
    #5
    Question (Describe all previous attempts to learn / understand)
    NASA's Best API for Simulating Orbits and Trajectories · How to find a planet during daylight? (Ex. Crescent Venus ) · What if all space is already empty/everything gone, and we only see its remnant light because of the limit of the speed of light and we only look at the past?
    9

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 9/21/2026

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

16
Views /mo
(+129%)
13
Visitors /mo
(+86%)
2
Referrals /mo

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