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Extraordinary facts ⭐⭐
Latest news about space ⭐⭐
Space fun ⭐⭐
Unknown mysteries about space ⭐⭐
@Discussion_astro_arena - is our discussion group
We give shoutout to the people who are the active in grp... ⭐⭐
Part of : @SciCommunity
Created
Between 1 March 2018 and 31 August 2021— estimated from Telegram’s id allocation, not measured. How this range is calculated.
2 measurements spanning 2 days. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 103–105 and does not start at zero.
Measurement log — every subscribers count we have recorded
Measured (UTC)
Subscribers
Change
9 Aug 2026, 09:31
104
no change
7 Aug 2026, 04:06
104
first reading
Engagement
20 posts held, back to 14 December 2021 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 1 pageof Telegram’s post history, 20 posts per page.
Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 20 posts for this entry, the most recent from 21 December 2025. An engagement rate over an empty window would be a number about nothing.
What this channel posts
Photos
323
Links
36
Lifetime counters from Telegram’s own channel header, read 9 August 2026 — not the date at the top of this page, which is when the subscriber count was last read. Below Telegram’s rounding threshold, so these counts are exact.
Reaction mix
16 reactions across 4 posts, in 3 distinct kinds. The most used accounts for 68.8% of them.
Every reaction kind recorded on the sample, most used first
Reaction
Count
Share
Share, drawn
🔥
11
68.8%
👍
3
18.8%
💯
2
12.5%
No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.
Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.
Coverage. Reactions were read on 4 of the 20 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 16reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.
Measured over the 20 most recent posts we hold, published 14 December 2021 to 21 December 2025, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.
WINTER SOLSTICE
The Winter Solstice is the shortest day and longest night of the year, happening when Earth's tilt points a hemisphere farthest from the Sun, usually December 21-22 in the North and June 20-21 in the South, marking the astronomical start of winter and a time of rebirth as days begin to lengthen again, celebrated with ancient festivals like Yule.
The winter solstice marks what is known as the "astron…
On today's date in 1966,Saturn’s moon Epimetheus was discovered by astronomer Richard L. Walker during early observations of Saturn's complex satellite system.
Early Observations🌑
Before the discovery was firmly established, a potential observation of Epimetheus was made using the Pioneer 11 spacecraft images, which designated it as S/1979S1. However, these images were insufficient to calculate a reliable orbit, le…
"The experiments not only provide us with insight into the dynamics of electron tunnelling for the first time," says physicist Krausz. "We have also shown that the movement of electrons in atoms or molecules can be observed in real time with the aid of laser field-induced tunnelling."
Based on this finding and the enabled control over electron movement within the atom, in the future scientists will be able to resea…
Why would the compass fail to work on Mars?
🧭Mars lacks a complete planetary magnetic field. There are only small magnetic anomalies, where the field is about 500 times weaker than on Earth. They are generated by magnetized rocks in the crust of Mars, not by the magnetic dynamo in the planet's core, as in the case of Earth.
Zones of magnetic anomalies are located irregularly, so that even a very sensitive compass c…
WHY is the axis of Uranus "horizontal"?
Unlike the other planets of the solar system, Uranus "lies on its side" relative to the plane of orbit around the Sun. If the Earth is commonly compared to a spinning, slightly inclined wolf, which moves around the Sun, the movement of Uranus resembles that of a rolling orbital ball.
The reasons for this position of the axis of Uranus remain unknown, but the main hypothesis s…
WHY do launch vehicles fly exclusively in an arc?
Launch vehicles are started on an arc-shaped trajectory to get the spacecraft into orbit properly. At the first stage, the spacecraft moves upwards, overcoming air resistance, and when above 100 kilometers the atmosphere gets thin enough, the rocket changes its trajectory to reach the target orbit with minimum fuel consumption.
If the launch vehicle is lifted direct…
Showing the 12 most recent of 20 posts we hold for @astro_arena. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Polls
The 2 polls we hold for this entry, as Telegram rendered them when we read the post. A poll’s figures keep moving after that, so each one is dated.
Shares as published. No per-option vote count is published by Telegram, so none is shown.
Percentages only — there are no per-option vote counts here, because Telegram publishes none.The public post preview gives each option’s share and a single voter total, and nothing else. Multiplying one by the other would produce a per-option tally that looks measured and is not: the shares are rounded to whole numbers before we ever see them. We print what was published and leave the column that does not exist empty.
The shares need not add up to 100.Rounding alone puts many polls at 99 or 101. A poll that allows more than one answer per voter runs well past 100 by design, and several here do. The bars are drawn against a fixed 100% track at each option’s own percentage rather than normalised to the total, so a poll that exceeds it shows that it does instead of being quietly rescaled.
Read from the 20 most recent posts we hold, published 14 December 2021 to 21 December 2025. Telegram labels each poll by kind — an anonymous poll, a quiz, a closed set of final results — and that label is reproduced rather than paraphrased.
Citation-graph rank
Citation-graph rank — 765,013 of 1,481,217entries in the measured graph. A weighted position computed from the forward and mention edges below — republished posts weigh more than named mentions — and recomputed periodically, over the whole graph. Published only as this ordinal position, never as a score: a position is a fact, and a score printed beside one channel’s name would read as a verdict this register does not make. The two counts beneath stay separate for the same reason mentions are never summed with forwards anywhere else on this page — a named-by count costs nothing to manufacture. The top 100 by this measure, or how it is computed.
Forward network
Republishes
Channels on the register whose posts this channel has forwarded.
Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.
Mentions
Named by 2 registered channels — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.
Named by
Channels on the register whose posts name this channel's handle.
A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.
Cite this entry
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 9 August 2026 — this
entry's latest reading, not the date you are reading this.
“Astronomy arena💥🌃✨☄️” (@astro_arena), 104 subscribers as measured 9 August 2026. Telegram Register, tgregister.com/channel/astro_arena.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.
