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r/fusion

43.9K members. The best post we have captured here reached 2.4K upvotes, which works out to 56 per 1,000 members.

56peak upvotes per 1,000 members
43.9Kmembers
2.4Kbest post
539most comments
198posts we track

Open r/fusion on Reddit β†—

What actually lands here

The mix of post types among everything we have captured. Posting a link where almost nothing but images lands is wasted effort, and this is the fastest way to see it.

62% 12% 10% 10%
Link 62% Image 12% Text 10% Video 10% Gallery 5% Question 3%

What the ceiling looks like

The biggest posts we have captured here. Links go to the original on Reddit.

Princeton nuclear physicist, fusion energy expert Liu Chang leaves US for China

↑ 2.4K πŸ’¬ 88 link 2025

Sam Altman’s $5.4B Nuclear Fusion Startup Helion Baffles Science Community

↑ 2.3K πŸ’¬ 539 link 2025

AI learns to recognize plasma instabilities 300ms before they occur

↑ 986 πŸ’¬ 46 link 2024

Trump is gutting the US fusion program and I can’t take it anymore!

↑ 799 πŸ’¬ 157 text 2025

China just bet $2 billion on fusion energy. The US must respond - Bob Mumgaard

↑ 458 πŸ’¬ 106 link 2025

China's "artificial sun" in Hefei could become the first in human history to generate electricity from fusion

↑ 369 πŸ’¬ 161 video 2026

China nuclear fusion: China building a giant facility to generate clean energy, satellite images appear to show | CNN

↑ 361 πŸ’¬ 70 link 2025

Fusion Closer to Reality as Scientists Smash Density Limit by Factor of 10

↑ 352 πŸ’¬ 30 link 2024

My visit at ITER in France

↑ 337 πŸ’¬ 20 gallery 2025

Altman’s $3.7 Billion Fusion Startup Leaves Scientists Puzzled

↑ 325 πŸ’¬ 338 link 2024

Communities its size

Within four times the member count either way, so the comparison is fair. Sorted by upside.

See what is climbing here before you write

ViralHunt tracks Reddit and eight other networks, records how every post grows, and puts what is taking off in front of your team in one list.

Start free β†’

Every figure here is what ViralHunt has captured from r/fusion, not everything the community has ever posted. We deliberately do not publish an average score: our sample is weighted toward a community's best posts, so an average would be flattering and wrong. Peak per 1,000 members is computed the same way for every community listed. See how we measure.