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r/ISRO

453.8K members. The best post we have captured here reached 3.8K upvotes, which works out to 8 per 1,000 members.

8peak upvotes per 1,000 members
453.8Kmembers
3.8Kbest post
231most comments
193posts we track

Open r/ISRO 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.

26% 23% 19% 15% 9% 8%
Video 26% Link 23% Image 19% Text 15% Gallery 9% Question 8%

The topics it labels

Flairs are the community's own categories, and the closest thing a subreddit has to telling you what it wants.

Original Content 37 Official 1 Misleading 1 Mock-up 1 Report in comments 1

What the ceiling looks like

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

Another image of Vikram lander taken by Pragyan rover at 11:04 IST, 30 August 2023 from 15 meters away.

↑ 3.8K 💬 131 gallery 2023

Mars As Seen by MOM!

↑ 2.3K 💬 55 video 2023

Skyroot Vikram-1 LiftOff!

↑ 2.2K 💬 66 video 2026

Vikram Has Done it!!

↑ 1.8K 💬 34 video 2026

ISRO PSLV C61 EOS-09 as seen from Pulicat viewpoint this morning. Use Headphones :)

↑ 1.4K 💬 45 video 2025

I rendered this looped scene of ISRO's TV D1 in Blender 3D.

↑ 1.1K 💬 27 video 2023

First stage of Skyroot's Vikram-1 is stacked at the First Launch Pad (FLP), SDSC-SHAR

↑ 965 💬 28 gallery 2026

My experience working with ISRO

↑ 962 💬 231 text 2025

My new minimalist GSLV sculpture

↑ 927 💬 32 video 2022

LVM3-M5/CMS-03 launch recorded from Launch view gallery at Sriharikota

↑ 918 💬 13 video 2025

Communities its size

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

r/ISRO, in numbers

Answered from the posts ViralHunt holds from this community, not from Reddit's own about page.

How many members does r/ISRO have?
r/ISRO has about 453.8K members. ViralHunt has tracked 193 of its posts; the biggest reached 3.8K upvotes, which is 8 per 1,000 members.
What is the most viral post on r/ISRO?
"Another image of Vikram lander taken by Pragyan rover at 11:04 IST, 30 August 2023 from 15 meters away." reached 3.8K upvotes and 131 comments in 2023, the highest score among the posts we hold from r/ISRO.
What subreddits are similar to r/ISRO?
Communities of a comparable size we track: r/Trumpvirus, r/alaska, r/Louisiana, r/popculture, r/BlueskySkeets, r/ProgressiveHQ.
What kind of posts do best on r/ISRO?
Of the posts we hold, 26% are video posts and 23% are link posts.
When is the best time to post on r/ISRO?
Across 193 timestamped posts we hold, the slots whose posts averaged the highest score are Wednesday at 15:00 UTC (1.3K avg upvotes), Saturday at 06:00 UTC (1.1K avg upvotes), Monday at 13:00 UTC (730 avg upvotes). The busiest day is Thursday. For Reddit as a whole, see the best time to post on Reddit page.
How many upvotes does a post need to reach the top of r/ISRO?
The 20th-best post we hold from r/ISRO has 619 upvotes, so that is roughly the bar for the top twenty.

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/ISRO, 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.