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Channel

Callista - Club d'Astronomie EPFL

@CallistaEPFL

On this record: Growth · Engagement · Reactions · Posts · Cite this entry

348subscribers

+3 since we began measuring on 7 August 2026

Risers and fallers across the register · movement among entries of Under 1,000.

Register entry

Telegram ID-1001729807312
TypeChannel
Username@CallistaEPFL
CreatedBetween 1 December 2021 and 30 April 2023— estimated from Telegram’s id allocation, not measured. How this range is calculated.
First recorded8 August 2026
Last confirmed live22 August 2026
Measurements held3
Confirmed unchanged1 time, most recently 22 August 2026
On Telegramt.me/CallistaEPFL

Growth

345348346.57 August 2026 — 345 subscribers8 August 2026 — 345 subscribers22 August 2026 — 348 subscribers7 August 202622 August 2026
3 measurements spanning 15 days, net +3. 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 345–348 and does not start at zero.
Measurement log — every subscribers count we have recorded
Measured (UTC)SubscribersChange
22 Aug 2026, 13:56348+3
8 Aug 2026, 06:50345no change
7 Aug 2026, 20:32345first reading

Engagement

20 posts held, back to 13 March 2024the 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 8 April 2026. An engagement rate over an empty window would be a number about nothing.

Reaction mix

80 reactions across 13 posts, in 6 distinct kinds. The most used accounts for 62.5% of them.

Every reaction kind recorded on the sample, most used first
ReactionCountShareShare, drawn
5062.5%
🔥2430.0%
🎉22.50%
👏22.50%
👌11.25%
🤩11.25%

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 13 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 80reactions 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 13 March 2024 to 8 April 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.

Recent posts

8 Apr 2026, 07:35 UTC281 views6 reactionsread 8 August 2026

Salut tout le monde !✨ On arrive à la phase finale du concours de logo🪐 Deux propositions ont été retenues, et maintenant c’est à vous de décider !!💫 Votez pour votre logo préféré dans le sondage juste en dessous 👇 Le logo gagnant sera celui qui apparaîtra sur nos pulls 👕 (et son créateur gagnera son pull !) On a aussi mis un poll sur insta et whatsapp donc merci de ne voter qu’une seule fois :) Merci à tous pour

6

24 Mar 2026, 15:26 UTC342 views7 reactionsread 8 August 2026
Photo

On est trop contents de vous annoncer un Quiz de Pâques 🐣🔭🍫 organisé par Callista et Les Irrotationnels ! Venez gagner des chocolats de Pâques le 1er avril (en PH H331 à 18h30) !

7

17 Mar 2026, 18:07 UTC≈1,190 views7 reactionsread 8 August 2026
Photo

Le dernier événement des Semaines de l'astronomie 🔭🌌💫 de cette année - une conférence par Prof. Pascale Jablonka. Elle présentera les raisons pour lesquelles la formation hiérarchique des galaxies est aujourd'hui considérée comme le scénario le plus probable. Elle abordera également les points qui restent encore à clarifier. Enfin, Prof. Jablonka placera son analyse dans le contexte des développements instrumentaux r

6👌1

3 Mar 2026, 17:18 UTC346 views7 reactionsread 8 August 2026
Photo

Hello à tous ! Nous sommes ravis de vous annoncer la 3ème édition des Semaines de l’Astronomie 🔭🌃⭐ qui se tiendra du 5 au 18 mars !! Le premier événement aura lieu ce jeudi : un quiz sur l'astronomie ! Tentez de gagner une place pour Astroval (une soirée d'observation le 19 mars avec fondue) ! La semaine prochaine, nous organiserons une observation sur l’Agora 🔭 le lundi 9 mars à 19h. Le mercredi 11 mars, rendez-vous

3🎉2🔥2

24 Feb 2026, 10:48 UTC323 views5 reactionsread 8 August 2026

Callista Recrute ! Bonjour tout le monde, on espère que vous avez passé des bonnes vacances ✨🔭🌌 ! Callista cherche des nouveaux membres pour rejoindre le: Pôle Logistique 🔭🌃 : - spécialiste du matos : quelqu’un qui s’y connait ou qui voudrait apprendre à entretenir le matériel et qui aime bien bricoler - gérant des évents et observations : quelqu’un de motivé, dynamique, avec des idées ! Pôle Communication 📀🆕🌌: - Pa

🔥5

19 Feb 2026, 07:43 UTC380 views3 reactionsread 8 August 2026

Hello! Mardi soir prochain, on vous propose une formation montage et utilisation des télescopes de Callista! C'est l'occasion rêvée de venir vous former et apprendre le fonctionnement d'un télescope, pour ensuite conduire des observations par vous même! Rdv 18h30 au Cubotron. On continuera par une observation si la météo est bonne (ie avec un miracle 🙏🏻) Inscription sur le form suivant : https://forms.gle/9hFn6VnCN7k

3

Signed Josué

10 Mar 2025, 11:33 UTC537 views8 reactionsread 8 August 2026
Photo

La semaine de l’astronomie commence aujourd’hui, et avec un invité de marque, Claude Nicollier, 1er suisse dans l’espace 🤩 Il nous racontera ses expériences passionnantes ainsi que l’apport de l’accès à l’espace pour la recherche en astrophysique, avec un accent particulier sur Hubble, Webb, Gaia et Euclid. Ce soir, 19h, dans l’amphi SG 1 ! 🌟

7🔥1

Signed Inès Degas

4 Mar 2025, 15:59 UTC511 views10 reactionsread 8 August 2026
Photo

Hello à tous ! Nous sommes ravis de vous annoncer la 2eme édition de notre Semaine de l’astronomie qui se tiendra du 10 au 14 mars !! 🌟 Nous souhaitons particulièrement mettre en avant la conférence de Claude Nicollier, premier astronaute suisse, qui nous fera l’honneur de partager son expérience hors du commun. D’autres conférences viendront enrichir cette semaine, comme celle des astrophysiciens Jean-Paul Kneib et

5🔥4👏1

Signed Inès Degas

25 Nov 2024, 17:24 UTC508 viewsread 8 August 2026

Don’t forget it’s tomorrow, 6 pm in cm 1 100 !

Signed Inès Degas

Showing the 12 most recent of 20 posts we hold for @CallistaEPFL. 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.

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 22 August 2026 — this entry's latest reading, not the date you are reading this.

“Callista - Club d'Astronomie EPFL” (@CallistaEPFL), 348 subscribers as measured 22 August 2026. Telegram Register, tgregister.com/channel/CallistaEPFL.

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.