r/fusion
Discussion and news on advancements in the field of nuclear fusion energy and related technologies.
How to think about r/fusion
This community focuses on discussions and news regarding advancements in nuclear fusion energy and related technologies. Members engage in technical conversations about the science behind fusion, its potential applications, and the latest research findings. The community is distinct for its emphasis on scientific rigor and the sharing of credible sources, making it a hub for enthusiasts and professionals alike in the field of nuclear energy.
Confidence 4/5
Audience
Participants in this community range from students and researchers to industry professionals and enthusiasts passionate about nuclear fusion. The demographic is likely skewed towards individuals with a background in science or engineering, particularly those interested in energy solutions and technological advancements. The vibe is generally inquisitive and collaborative, with members eager to share knowledge and stay updated on the latest developments.
Posting culture
Content that thrives in this community includes in-depth analyses, research papers, and news articles related to nuclear fusion. Members appreciate well-researched posts that stimulate discussion, while overly promotional or superficial content tends to get downvoted. The posting cadence is moderate, with members frequently sharing updates and engaging in discussions, especially during significant advancements or announcements in the field.
Brand engagement notes
Brands looking to engage with this community should prioritize authenticity and knowledge sharing over direct promotion. Providing valuable insights, participating in discussions, and sharing relevant research can foster goodwill. However, overt marketing tactics are likely to be met with skepticism or hostility. Brands might consider sponsoring educational content or collaborating with respected figures in the field to enhance their credibility and visibility within the community.
Top keywords
What r/fusion 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/steven9973
- u/Baking
- u/sien
- u/joaquinkeller
- u/smopecakes
- u/cking1991
- u/AndrewHollandFIA
- u/Memetic1
- u/bschmalhofer
- u/Big_Extreme_8210
- u/[deleted]
- u/Spare-Pick1606
- u/Life_Vermicelli3006
- u/WashingtonDOH
- u/Psychological_Toe471
- u/someoctopus
- u/efh1
- u/maglifzpinch
- u/Atmo_reetry
- u/sicktaker2
- u/Fusion-Energy-News
- u/sussiwussiamogussi
- u/that_planetarium_guy
- u/JedahMakai
- u/Quick-Beautiful-9142
- u/Defiant-Travel8174
- u/AnakinRagnarsson66
- u/piggyboy2005
- u/Jonathon_Merriman
- u/madmadG
- u/paulfdietz
- u/blurpsn
- u/willis936
- u/fizzix_is_fun
- u/DerPlasma
- u/intengineering
- u/ElmarM
- u/Gheelalt
- u/falconberger
- u/Bananawamajama
- u/arrogantargonian
- u/MatthewWaller
- u/EmperorPedro2
- u/DeMass
- u/Andrew_from_Quora
- u/FusionMatty
- u/maurymarkowitz
- u/Shift_One
- u/Ropit412
- u/EastUmpqua
- u/fluorothrowaway
- u/Able_Artichoke_8195
- u/Virgilio10
- u/StPapaNoel
- u/AdmiralKurita
- u/DeMystified-Future
- u/Unusual_Design4320
- u/optimistic-feynman
- u/Electrical-Room-2278
- u/Mana_Leak_
- u/violacaea
- u/Docjes
- u/AlicanteL
- u/nycnatl
- u/Defiant-Property-908
- u/farbeyondhorizons
- u/Xorguinae
- u/HatsusenoRin
- u/Accomplished-Bill-45
- u/bruhmanfunni
- u/tibtub
- u/Orbital-Illustration
- u/Curious_Ordinary_980
- u/schmeckendeugler
- u/marjalfred
- u/frocerose
- u/Foo-Bar-n-Grill
- u/ReluctantGiraffe
- u/scariestJ
- u/ioncloud9
- u/Low-Newspaper7726
- u/morecoffeemore
- u/JB_Fusion
- u/RushAndAPush
- u/radioli
- u/Mjzzjm654456
- u/callmetaters
- u/Aethy
- u/Vailhem
- u/DrScott_
- u/MeoWHamsteR7
- u/Ecstatic_Choice_5482
- u/Affectionate_Web_509
- u/Nabakin
- u/FusionHub0
- u/RulerOfThePixel
- u/HenryTjernlund
- u/LotsoWatts
- u/MetrizableUri
- u/Natural_Dark_2387
By votes
- u/steven9973
- u/Baking
- u/sien
- u/joaquinkeller
- u/AndrewHollandFIA
- u/smopecakes
- u/Big_Extreme_8210
- u/sicktaker2
- u/cking1991
- u/violacaea
- u/paulfdietz
- u/bschmalhofer
- u/Docjes
- u/AlicanteL
- u/fizzix_is_fun
- u/Defiant-Property-908
- u/blurpsn
- u/nycnatl
- u/farbeyondhorizons
- u/willis936
- u/Xorguinae
- u/someoctopus
- u/HatsusenoRin
- u/Memetic1
- u/Accomplished-Bill-45
- u/bruhmanfunni
- u/Spare-Pick1606
- u/DerPlasma
- u/Psychological_Toe471
- u/tibtub
- u/falconberger
- u/ElmarM
- u/Life_Vermicelli3006
- u/Fusion-Energy-News
- u/Orbital-Illustration
- u/WashingtonDOH
- u/arrogantargonian
- u/[deleted]
- u/Curious_Ordinary_980
- u/Gheelalt
- u/efh1
- u/schmeckendeugler
- u/marjalfred
- u/maglifzpinch
- u/frocerose
- u/Foo-Bar-n-Grill
- u/ReluctantGiraffe
- u/DeMass
- u/ioncloud9
- u/Low-Newspaper7726
- u/scariestJ
- u/Bananawamajama
- u/intengineering
- u/JedahMakai
- u/morecoffeemore
- u/JB_Fusion
- u/RushAndAPush
- u/Mjzzjm654456
- u/radioli
- u/callmetaters
- u/MatthewWaller
- u/FusionMatty
- u/Aethy
- u/Quick-Beautiful-9142
- u/maurymarkowitz
- u/Ropit412
- u/Atmo_reetry
- u/Vailhem
- u/Andrew_from_Quora
- u/DrScott_
- u/sussiwussiamogussi
- u/that_planetarium_guy
- u/Shift_One
- u/Ecstatic_Choice_5482
- u/MeoWHamsteR7
- u/EmperorPedro2
- u/RulerOfThePixel
- u/Affectionate_Web_509
- u/Nabakin
- u/LotsoWatts
- u/FusionHub0
- u/HenryTjernlund
- u/fluorothrowaway
- u/sboyette2
- u/electroncapture
- u/MetrizableUri
- u/Natural_Dark_2387
- u/ArcFlash
- u/EastUmpqua
- u/ScarcityPositive8537
- u/_craq_
- u/aa1607
- u/leferi
- u/Anfros
- u/stonecats
- u/BlueGlassTTV
- u/Caesar_King_of_Apes
- u/Yiowa
- u/MarkWhittington
- u/Able_Artichoke_8195
Top commenters
By comment count
- u/Baking
- u/steven9973
- u/[deleted]
- u/ElmarM
- u/joaquinkeller
- u/maurymarkowitz
- u/Bananawamajama
- u/vaccinepapers
- u/Jacko10101010101
- u/Aggravating_Loss8837
- u/Working_Sundae
- u/bascule
- u/DerPlasma
- u/the_speeding_train
- u/paulfdietz
- u/the_zelectro
- u/smopecakes
- u/fizzix_is_fun
- u/BelAirGhetto
- u/QVRedit
- u/violacaea
- u/Volta01
- u/mkvalor
- u/HorlicksAbuser
- u/falconberger
- u/iBoMbY
- u/mrmonkeybat
- u/tonyabracadabra
- u/Ithirahad
- u/matskopf
- u/Scotterdog
- u/CheckYoDunningKrugr
- u/Physix_R_Cool
- u/Mandelvolt
- u/TheGatesofLogic
- u/CertainMiddle2382
- u/Life_Vermicelli3006
- u/trebligdivad
- u/PhotoNuclear
- u/theansweristhebike
- u/No_Term9373
- u/beaded_lion59
- u/madmadG
- u/andyfrance
- u/croninsiglos
- u/edawg2469
- u/The_devil_Yano
- u/Patient-Avocado1329
- u/ZiggyPalffyLA
- u/Luddebr0r
- u/CaptainGlac1er
- u/Vedicstudent108
- u/deilk
- u/Mantis9000
- u/passcork
- u/Drmcclung
- u/olawlor
- u/flat5
- u/RelevantWin3336
- u/AlicanteL
- u/tomfk8
- u/chriswhoppers
- u/ImoStoffa
- u/rmarti78
- u/MadDoctor5813
- u/donquixote25
- u/pianoceo
- u/srichey321
- u/Psychological_Toe471
- u/HipsterCosmologist
- u/ICF-Technician
- u/paddy_dub_85
- u/-ricketycricket
- u/logosfabula
- u/EnergyIsQuantized
- u/ChipotleMayoFusion
- u/sicktaker2
- u/Inklin-
- u/chessant2014
- u/PM_ME_YOUR_REPORT
- u/4thDevilsAdvocate
- u/Ok_Club_8226
- u/AngryBeerWrangler
- u/NearHorse
- u/omicr_on
- u/fanzakh
- u/alex_quine
- u/Jules_QB2
- u/deafdefying66
- u/beelseboob
- u/Spats_McGee
- u/andyrocks
- u/try-finger-but-hol3
- u/Slight_Software_2348
- u/escoces
- u/Tdrendal
- u/Jackalope_325
- u/dirt_555_rabbitt
- u/zvekl
- u/petripooper
By votes
- u/Baking
- u/ElmarM
- u/joaquinkeller
- u/[deleted]
- u/violacaea
- u/maurymarkowitz
- u/matskopf
- u/rmarti78
- u/Working_Sundae
- u/MadDoctor5813
- u/RTNoftheMackell
- u/Aggravating_Loss8837
- u/NearHorse
- u/DerPlasma
- u/steven9973
- u/TheGatesofLogic
- u/fizzix_is_fun
- u/Jolly-Improvement-13
- u/Bananawamajama
- u/NinjaKoala
- u/smopecakes
- u/ZiggyPalffyLA
- u/HurricaneWindAttack
- u/HipsterCosmologist
- u/Smallball79
- u/Real-Patriotism
- u/sblcmcd
- u/Volta01
- u/Yiowa
- u/FiveFingerDisco
- u/zabby39103
- u/andyfrance
- u/Jkbstnbrg
- u/Luddebr0r
- u/that_planetarium_guy
- u/BelAirGhetto
- u/RivieraKid
- u/iBoMbY
- u/elegance78
- u/donquixote25
- u/paulfdietz
- u/DeMass
- u/theansweristhebike
- u/SchrodingersSpoon
- u/bascule
- u/Physix_R_Cool
- u/Dragofant
- u/willis936
- u/the_speeding_train
- u/Ngfeigo14
- u/democacydiesinashark
- u/Light_Ethos
- u/Ithirahad
- u/Phoenix5869
- u/trebligdivad
- u/Slaanesh277
- u/ohnonotmynono
- u/CaptainGlac1er
- u/RelevantWin3336
- u/pianoceo
- u/Psychological_Toe471
- u/fanzakh
- u/MatthewWaller
- u/Jacko10101010101
- u/Mandelvolt
- u/the_zelectro
- u/energyaware
- u/cking1991
- u/falconberger
- u/deafdefying66
- u/maglifzpinch
- u/ShihPoosRule
- u/zkello
- u/likejanegoodall
- u/ProfessorBarium
- u/Vedicstudent108
- u/MmWinter
- u/jackanakanory_30
- u/the_timezone_bot
- u/photino65
- u/oliness
- u/srichey321
- u/omicr_on
- u/CheckYoDunningKrugr
- u/JB_Fusion
- u/Impossible_Spell7812
- u/Big_Extreme_8210
- u/Caldera235
- u/survivalnow
- u/Oryxhasnonuts
- u/marjalfred
- u/T3zlu
- u/madmadG
- u/Battlemaster420
- u/beelseboob
- u/flyerfanatic93
- u/HatsusenoRin
- u/timee_bot
- u/AndrewHollandFIA
- u/R1chterScale
Similar communities
Where this audience also spends time
Topic-adjacent communities surfaced from Reddit's own related subreddit signal.
FAQ
r/fusion — frequently asked questions
Quick facts about this subreddit's size, history, focus, and related communities.
How many subscribers does r/fusion have?
r/fusion has approximately 38,807 subscribers as of May 27, 2026.
When was r/fusion created?
r/fusion was created on December 27, 2008 (17 years ago).
What is r/fusion about?
This community focuses on discussions and news regarding advancements in nuclear fusion energy and related technologies. Members engage in technical conversations about the science behind fusion, its potential applications, and the latest research findings. The community is distinct for its emphasis on scientific rigor and the sharing of credible sources, making it a hub for…
What subreddits are similar to r/fusion?
Communities similar to r/fusion include r/nuclearpower, r/nuclear, r/isaacarthur, r/colonizemars, r/blueorigin.
Who are the most active posters on r/fusion?
The most frequent posters on r/fusion include u/steven9973, u/Baking, u/sien.
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