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r/Mars

95.2K members. The best post we have captured here reached 11.8K upvotes, which works out to 124 per 1,000 members.

124peak upvotes per 1,000 members
95.2Kmembers
11.8Kbest post
1.5Kmost comments
199posts we track

Open r/Mars on Reddit ↗

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.

46% 32% 12%
Image 46% Link 32% Video 12% Gallery 6% Text 3% Question 3%

What the ceiling looks like

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

Olympus Mons: The biggest volcano in our star system!

↑ 11.8K 💬 177 image 2025

Mars

↑ 8.9K 💬 80 image 2026

Mars on the left, Earth on the right.

↑ 7.7K 💬 273 image 2024

Water ice on Mars, shot by the ESA

↑ 5.1K 💬 136 image 2024

Made something like google earth but on mars.

↑ 4.6K 💬 184 video 2021

Olympus Mons: Giant Mountain of Mars

↑ 4K 💬 92 gallery 2026

Clearest image ever taken of Mars' North Pole. Yes that's water ice.

↑ 3.2K 💬 121 image 2026

Probably a dumb question but I feel like it's the best place to ask, what are realistically the reasons to colonize Mars ?

↑ 3.2K 💬 1.5K image 2026

Curiosity wheels taken yesterday, showing the damages caused during the 13 years it has been on the Red Planet

↑ 3.1K 💬 117 image 2026

2 NEW epic images of Phobos over Mars just released by Mars Express. Processed by Andrea Luck

↑ 3K 💬 42 gallery 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.

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Every figure here is what ViralHunt has captured from r/Mars, 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 We deliberately do not publish an average score: our sample is weighted toward a community's best posts, so an average would be flattering and wrong.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.