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r/carlsagan

18.5K members. The best post we have captured here reached 3.1K upvotes, which works out to 169 per 1,000 members.

169peak upvotes per 1,000 members
18.5Kmembers
3.1Kbest post
138most comments
109posts we track

Open r/carlsagan 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.

49% 27% 11%
Image 49% Video 27% Gallery 11% Text 7% Link 5% Question 2%

What the ceiling looks like

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

β€œIf a human disagrees with you, let him live.”

↑ 3.1K πŸ’¬ 138 image 2025

Carl Sagan and Jane Goodall meme

↑ 1.8K πŸ’¬ 18 image 2025

The suppression of uncomfortable ideas..

↑ 1.8K πŸ’¬ 3 video 2025

Carl Sagan donated $250 to Bernie Sanders when he ran for congress in 1990

↑ 1.6K πŸ’¬ 15 image 2025

Give Us Hope 1988

↑ 1.5K πŸ’¬ 10 image 2025

RIP Jane Goodall, 1934-2025, born the same year as Carl Sagan

↑ 1.1K πŸ’¬ 12 link 2025

"The Cosmos is all that is or ever was or ever will be"

↑ 993 πŸ’¬ 19 image 2025

Happy to find this sub. This is the shirt I’m wearing today.

↑ 936 πŸ’¬ 19 image 2025

46 years ago, Carl Sagan beautifully explained the fourth dimension using a sliced apple

↑ 761 πŸ’¬ 6 link 2026

Carl Sagan was not only an astronomer, but someone who romanticized science. He spoke of it as a way to connect us with the cosmos, truth and wonder.…

↑ 699 πŸ’¬ 10 link 2025

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/carlsagan, 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 We deliberately do not publish an average score: our sample is weighted toward a community's best posts, so an average would be flattering and wrong.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.