Best Science Telegram Channels: Live Rankings

How we rank Telegram channels

Rankings are built only from public data we track over time, not paid placement. Every channel is measured on four signals: total subscribers, weekly subscriber growth, average reach (the typical number of views a post receives), and a citation score that counts how often other tracked channels forward or mention it. Use the sort controls above to re-rank the list by any single signal. We re-check each channel roughly every 30 minutes, so a channel that is gaining subscribers quickly can climb the growth ranking within hours.

What makes a Telegram channel worth following

Subscriber count alone does not tell you whether a channel is active or worth your time. A large channel that posts rarely, or whose posts get few views relative to its size, is often less useful than a smaller channel with high reach and steady growth. When you compare channels here, look at three things together: how many subscribers it has, how many of them actually see each post (reach), and whether it is still growing. A healthy public channel usually shows consistent posting, reach that is a meaningful fraction of its subscriber count, and a growth line that trends up rather than flat or down.

Telegram channel metrics, explained

Subscribers

The number of accounts that have joined the channel. This is the headline figure most rankings use.

Reach

The average number of views a recent post receives. A channel with 100K subscribers and 60K average views has far higher reach than one with the same subscribers and 5K views.

Growth (7d)

The change in subscribers over the last seven days. Positive growth means the channel is adding subscribers; a negative figure means it is losing them.

Citations

How often other channels we track forward or mention this channel. A high citation score is a sign that the wider Telegram ecosystem treats the channel as a source worth sharing.

Posts per day

How frequently the channel publishes, averaged over recent activity. It is a quick read on how active a channel is.

Check whether a channel's subscribers are real

Subscribers can be bought; the view counter under a public channel's posts cannot be faked nearly as cheaply. Dividing one by the other gives a channel's reach, and comparing that against channels of the same size is the fastest way to spot an inflated audience. Both of these are free and need no account.

Frequently asked questions

What are the best Science Telegram channels in 2026?

The most popular Science Telegram channel right now is Cosmo Bear Community (@cosmobear_io) with 721K subscribers. This directory ranks Science channels live by subscribers, growth, reach, and citations, each with a subscriber growth chart.

How are the channel rankings calculated?

Channels are ranked by public metrics tracked over time: subscriber count, weekly growth, average reach (views per post), and a citation index based on how often other channels forward or mention them. You can re-sort the list by any of these.

How often is the directory updated?

Subscriber counts and reach are refreshed continuously and the directory re-syncs roughly every 30 minutes, so rankings and growth charts stay current.

How can I tell if a Telegram channel's subscribers are real?

Compare the two numbers Telegram publishes. Every post on a public channel shows a view count; divide it by the subscriber count to get the channel's reach. That ratio falls steeply as a channel grows, so it only means something against channels of a similar size - a figure that is healthy for a million-subscriber channel would be poor for one with five thousand. A channel sitting in the bottom tenth of its size band is the clearest sign that its subscriber count was inflated. Our free Telegram channel checker does this comparison for any public channel, and the engagement rate benchmarks page shows what normal looks like at every size.

Are private, scam, or adult channels listed?

No. Only public channels are listed, and channels flagged as NSFW/adult are excluded from the directory.

How do I find the best Telegram channels?

Start from a ranked directory like this one, then narrow by topic or language using the filters above. Sort by subscribers to see the biggest channels, by reach to find the ones whose posts are actually seen, or by growth to spot channels gaining subscribers fast. Open any channel for its full stats and subscriber growth chart before you join.

Are Telegram channels safe?

Public channels are broadcast-only, so joining one does not expose your phone number to the owner or let them message you privately. The usual risks are scams and misinformation, not the channel itself. We list only public channels and exclude any flagged as adult, but you should still avoid channels that promise guaranteed profits, ask for payments, or request personal details.

What is the difference between a Telegram channel and a group?

A channel is one-way broadcasting: only admins post and subscribers read, which suits news, announcements, and large audiences. A group is two-way, so members can chat with each other. Channels can have unlimited subscribers, while groups are capped at 200,000 members. This directory ranks public channels.

How many subscribers is a lot for a Telegram channel?

It depends on the topic and language, but as a rough guide: under 1,000 subscribers is a small channel, 10,000 to 100,000 is mid-sized, and anything above 1,000,000 is among the largest on the platform. Reach matters as much as raw size, since a smaller channel with high views per post can be more valuable than a large one with low reach.

How do I grow a Telegram channel?

Growth comes from consistent posting, a clear topic, and being shared by other channels. Post on a regular schedule, write a clear channel name and description so it is discoverable, and get featured or mentioned by related channels, which is what the citation score measures. Watching your growth chart over time tells you which posts and collaborations actually moved the numbers.

Is this Telegram directory free to use?

Yes. Browsing the rankings, filtering by topic or language, and viewing any channel's stats and growth chart are all free, with no account required.