r/carlsagan
A subreddit for Carl Sagan related content.
How to think about r/carlsagan
This community is dedicated to the life, work, and ideas of Carl Sagan, a renowned astronomer and science communicator. Members share a variety of content, including discussions about Sagan's contributions to science, philosophy, and popular culture. The community fosters a deep appreciation for critical thinking and the pursuit of knowledge, often emphasizing Sagan's views on science and skepticism against pseudoscience.
Confidence 4/5
Audience
Participants in this community are typically science enthusiasts, students, and fans of Carl Sagan, often ranging from young adults to older individuals. They are drawn by a shared interest in astronomy, science communication, and philosophical discussions. The vibe is generally respectful and inquisitive, with members valuing thoughtful discourse and a commitment to rationality.
Posting culture
Content that thrives includes insightful discussions, educational resources, and multimedia related to Sagan's work. Members appreciate well-researched posts and original content that sparks conversation. Posts that are overly promotional or lack substance tend to receive downvotes. The community encourages a steady flow of content, with an emphasis on quality over quantity, and members are likely to engage with posts that resonate with Sagan's legacy.
Brand engagement notes
Brands should approach this community with caution, as members are often skeptical of overt promotion and commercial intent. Authentic engagement through sharing educational content, supporting science initiatives, or collaborating on projects related to Sagan's themes can resonate well. Brands should avoid spammy tactics and instead focus on contributing value to discussions, such as sponsoring educational content or hosting Q&A sessions with experts in related fields.
Top keywords
What r/carlsagan talks about
Weighted by how often each term appears in posts and comments, relative to baseline frequency. The largest words are the strongest signals of community focus.
External signals
Where the community looks
Top external domains linked from posts and comments — a quick read on the sources of truth this audience trusts.
Top contributors
Who shapes the conversation
The most active and most-upvoted posters and commenters in this community. Useful when planning outreach or studying a community's tastemakers.
Top posters
By post count
- u/aalanbarbosa
- u/Saganism1996
- u/carlsagandotcom
- u/Seneca52mc
- u/[deleted]
- u/zebleck
- u/Few-Background2498
- u/RogerEbertsDog
- u/Freud_was_a_noob
- u/bitsofchunks
- u/PropaGate-Art
- u/kdean01
- u/Calm_Low6192
- u/BalooVanAdventures
- u/bipolarcyclops
- u/Kerbal_stuck_on_Eve
- u/mayoronczka
- u/SkepticSalamander
- u/Atheist-Devil
- u/EnglishFoodie
- u/astropolitan
- u/DalePlueBot
- u/Romulox_returns
- u/mrvxv
- u/Adjag2
- u/Beaukimber
- u/the_hellmouth
- u/Starwarsnerd_7
- u/Mizz-Robinhood
- u/paperkitten678
- u/Quan-Su-Dude
- u/Babbna
- u/MacRicius
- u/xDENTALPLANx
- u/DataGuru314
- u/Show84
- u/nnomadic
- u/Microsis
- u/alexleaud2049
- u/alkavan
- u/antdude
- u/shpadoinkle__
- u/compLexityFan
- u/dangtheory
- u/ChamposaurusWrex
- u/ScipioAtTheGate
- u/Gutriot
- u/Kanto_Cacturnes
- u/Cosmic-Sagan
- u/casketgirls
- u/Crashed_teapot
- u/Galactus_Jones762
- u/zedhenson
- u/Archivist_Goals
- u/LeatherJury4
- u/WFoxAmMe
- u/Felpaszmusic
- u/ElectricLion33
- u/sawyer5050
- u/Vermilion-Sands
- u/LilyoftheRally
- u/xildarion
- u/CoastLate7752
- u/Kavin_becon
- u/SkateboardCore
- u/getvinay
- u/1080krld
- u/Jossit
- u/TheTwistedSpoon
By votes
- u/Saganism1996
- u/carlsagandotcom
- u/Seneca52mc
- u/Few-Background2498
- u/[deleted]
- u/Freud_was_a_noob
- u/RogerEbertsDog
- u/PropaGate-Art
- u/kdean01
- u/Calm_Low6192
- u/BalooVanAdventures
- u/bipolarcyclops
- u/Kerbal_stuck_on_Eve
- u/aalanbarbosa
- u/mayoronczka
- u/bitsofchunks
- u/SkepticSalamander
- u/Atheist-Devil
- u/zebleck
- u/DalePlueBot
- u/EnglishFoodie
- u/astropolitan
- u/Romulox_returns
- u/mrvxv
- u/Adjag2
- u/the_hellmouth
- u/Starwarsnerd_7
- u/Beaukimber
- u/dangtheory
- u/Mizz-Robinhood
- u/paperkitten678
- u/Quan-Su-Dude
- u/MacRicius
- u/Babbna
- u/xDENTALPLANx
- u/DataGuru314
- u/Show84
- u/nnomadic
- u/Microsis
- u/antdude
- u/alexleaud2049
- u/alkavan
- u/compLexityFan
- u/shpadoinkle__
- u/Gutriot
- u/ChamposaurusWrex
- u/ScipioAtTheGate
- u/Kanto_Cacturnes
- u/casketgirls
- u/Cosmic-Sagan
- u/Crashed_teapot
- u/zedhenson
- u/Archivist_Goals
- u/Galactus_Jones762
- u/Felpaszmusic
- u/Vermilion-Sands
- u/LeatherJury4
- u/WFoxAmMe
- u/ElectricLion33
- u/sawyer5050
- u/LilyoftheRally
- u/xildarion
- u/Kavin_becon
- u/CoastLate7752
- u/SkateboardCore
- u/getvinay
- u/1080krld
- u/Jossit
- u/TheTwistedSpoon
Top commenters
By comment count
- u/LilyoftheRally
- u/Vegemyeet
- u/[deleted]
- u/Pirate-Andy
- u/Dona_Gloria
- u/Romulox_returns
- u/metamagicman
- u/Turtley13
- u/DalePlueBot
- u/Seneca52mc
- u/luke_530
- u/ToddBradley
- u/Hunor_Deak
- u/blumpsicle
- u/nnavroops
- u/FarAbbreviations4983
- u/Working-Sandwich6372
- u/dreamboat_king
- u/mayoronczka
- u/CoastLate7752
- u/Financial-Barnacle79
- u/Quan-Su-Dude
- u/Few-Background2498
- u/what_how_n_whyy
- u/Starwarsnerd_7
- u/aderrygirl
- u/BettaThanFetta
- u/_ravenclaw
- u/TEC_seismic1
- u/pelathos
- u/ObviousTroll37
- u/butyric_instance
- u/Fun-Chipmunk6078
- u/Mists_of_Analysis
- u/pikay93
- u/Minimum_Ad_7684
- u/0TheMadHatter0
- u/Gibuu
- u/enmokusei
- u/afinemax01
- u/dabderax
- u/ddiknosaj
- u/Become_The_Villain
- u/CraftsyDad
- u/shittyspacesuit
- u/cosmic_crunchberry
- u/NetworkingForFun
- u/MoneylineMoe
- u/VeeKam
- u/IzzFlr
- u/InterestingCarpet666
- u/grogknight
- u/JuncoReddit
- u/Rinaldus91
- u/Eggshell_Walker_
- u/Nyp17
- u/emme1014
- u/dangtheory
- u/Demonyx12
- u/StSaganfollower
- u/FinnicKion
- u/Significant-Ratio688
- u/FS64
- u/mafaso
- u/Endless_Change
- u/OneWhoWaits
- u/gryeguy
- u/hai1sag4n
- u/coastiestacie
- u/Mufti_Guy
- u/ghabibi
- u/gondowana
- u/luxulterior
- u/Talnoy
- u/yourpainisatribute
- u/limesacul
- u/billfredgilford
- u/-SmackMyBitchUp-
- u/_BearsBeetsBattle_
- u/phxclstramaryllis
- u/CosmosGatito
- u/Floydsaganx
- u/TouilleEe
- u/Common-Word-3582
- u/Deuce_le_vance
- u/aalanbarbosa
- u/Bombadil_and_Hobbes
- u/jvnk
- u/BalooVanAdventures
- u/megs_in_space
- u/astropolitan
- u/Kerouackie
- u/Moonlight_ray
- u/radio_activated
- u/cjg5025
- u/kbranni23
- u/05bender
- u/weimaranerdad71
- u/Airican
- u/H3racIes
By votes
- u/Vegemyeet
- u/Dang_it_
- u/dreamboat_king
- u/LilyoftheRally
- u/Turtley13
- u/Mists_of_Analysis
- u/Quan-Su-Dude
- u/ddiknosaj
- u/Zoso-Overdose
- u/pikay93
- u/metamagicman
- u/blumpsicle
- u/Romulox_returns
- u/MoneylineMoe
- u/Bombadil_and_Hobbes
- u/Dreadhead21
- u/ToddBradley
- u/Rinaldus91
- u/gryeguy
- u/CoastLate7752
- u/pelathos
- u/0TheMadHatter0
- u/Pirate-Andy
- u/FinnicKion
- u/Carl_Sagan_Fan
- u/[deleted]
- u/aderrygirl
- u/Gibuu
- u/Become_The_Villain
- u/VeeKam
- u/billfredgilford
- u/weimaranerdad71
- u/Lady-Cane
- u/wetclogs
- u/PracticalMine3971
- u/joelschlosberg
- u/BettaThanFetta
- u/DalePlueBot
- u/shittyspacesuit
- u/Few-Background2498
- u/Goldin
- u/Robinhoody84
- u/_ravenclaw
- u/Nyp17
- u/Significant-Ratio688
- u/Dona_Gloria
- u/H3racIes
- u/Minimum_Ad_7684
- u/Seneca52mc
- u/luke_530
- u/CraftsyDad
- u/Hunor_Deak
- u/IzzFlr
- u/Eggshell_Walker_
- u/Demonyx12
- u/FarAbbreviations4983
- u/Working-Sandwich6372
- u/what_how_n_whyy
- u/Airican
- u/Microscopian
- u/TEC_seismic1
- u/enmokusei
- u/cosmic_crunchberry
- u/InterestingCarpet666
- u/nnavroops
- u/ghabibi
- u/mayoronczka
- u/limesacul
- u/CosmosGatito
- u/Floydsaganx
- u/TouilleEe
- u/Common-Word-3582
- u/Deuce_le_vance
- u/aalanbarbosa
- u/nattack
- u/D-Smitty
- u/Starwarsnerd_7
- u/Specialist-Look-7929
- u/henlochimken
- u/dreadwail
- u/IT_AccountManager
- u/afinemax01
- u/NetworkingForFun
- u/emme1014
- u/FS64
- u/mafaso
- u/hai1sag4n
- u/coastiestacie
- u/gondowana
- u/luxulterior
- u/Talnoy
- u/Financial-Barnacle79
- u/-SmackMyBitchUp-
- u/jvnk
- u/Moonlight_ray
- u/LordMoeNeralic
- u/EastAmount6684
- u/lichilichi5
- u/KevinGSantiago
- u/hydratedberry
Similar communities
Where this audience also spends time
Topic-adjacent communities surfaced from Reddit's own related subreddit signal.
FAQ
r/carlsagan — frequently asked questions
Quick facts about this subreddit's size, history, focus, and related communities.
How many subscribers does r/carlsagan have?
r/carlsagan has approximately 15,854 subscribers as of May 27, 2026.
When was r/carlsagan created?
r/carlsagan was created on February 25, 2010 (16 years ago).
What is r/carlsagan about?
This community is dedicated to the life, work, and ideas of Carl Sagan, a renowned astronomer and science communicator. Members share a variety of content, including discussions about Sagan's contributions to science, philosophy, and popular culture. The community fosters a deep appreciation for critical thinking and the pursuit of knowledge, often emphasizing Sagan's views …
What subreddits are similar to r/carlsagan?
Communities similar to r/carlsagan include r/cosmos, r/astrobiology, r/geoscience, r/spaceshuttle.
Who are the most active posters on r/carlsagan?
The most frequent posters on r/carlsagan include u/aalanbarbosa, u/Saganism1996, u/carlsagandotcom.
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