TIL the Hiroshima atomic bomb blew itself apart so quickly that over 98% of its uranium never underwent nuclear fission. https://en.wikipedia.org/wiki/Atomic_bombings_of_Hiroshima_and_Nagasaki https://redd.it/1vgzgr6 @r_til

Channel
r/TodayIlearned
@r_til
On this record: Topic · Growth · Engagement · Posts · Cite this entry
199subscribers
-3 since we began measuring on 6 August 2026
Risers and fallers across the register · movement among entries of Under 1,000.
Register entry
| Telegram ID | -1001099401875 |
|---|---|
| Type | Channel |
| Username | @r_til |
| Created | 4 December 2016 — measured — cross-checked against a third-party dataset (TGDataset) |
| First recorded | 7 August 2026 |
| Last confirmed live | 11 October 2026 |
| Measurements held | 5 |
| Confirmed unchanged | 2 times, most recently 11 October 2026 |
| On Telegram | t.me/r_til |
Topic
Other / unclassifiable — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-FP8, prompt version 1) read this channel’s own recent posts on 24 September 2026 and assigned it the closest of 31 fixed categories, at 66% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and why it has no browse page of its own yet.
Growth
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 30 Sept 2026, 10:37 | 199 | -1 |
| 9 Sept 2026, 03:19 | 200 | -1 |
| 14 Aug 2026, 17:46 | 201 | -1 |
| 7 Aug 2026, 04:02 | 202 | no change |
| 6 Aug 2026, 15:54 | 202 | first reading |
Engagement
20 posts held, back to 5 August 2026 — 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 page of 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 7 August 2026. An engagement rate over an empty window would be a number about nothing.
Recent posts
TIL the prophet Tiresias from Greek myth had his sex changed for stopping two snakes from mating, twice. He was then blinded by Hera after siding with Zeus when asked whether men or women enjoy sex more. Having lived as both, he answered women 9:1 https://en.wikipedia.org/wiki/Tiresias https://redd.it/1vhjtey @r_til
TIL prior to auditioning for the role of the Eleventh Doctor, Matt Smith had never seen Doctor Who. https://en.wikipedia.org/wiki/Eleventh_Doctor https://redd.it/1vhdh9w @r_til
TIL that the Norfolk Broads a vast network of 41 lakes and canals in England are not natural. They are actually flooded, medieval industrial sites created because 12th-century monasteries hand-dug millions of tons of peat out of the ground to use as firewood. https://en.wikipedia.org/wiki/The_Broads https://redd.it/1vhbbki @r_til
TIL a fungal blight accidentally introduced from Japan in 1904 killed three to four billion American chestnut trees within decades, and it was once said a squirrel could travel from Maine to Georgia without ever touching the ground, just by hopping through chestnut branches the whole way https://en.wikipedia.org/wiki/American_chestnut https://redd.it/1vhiu9c @r_til
TIL the Spinning Jenny, invented in 1764, let one worker spin 8 threads at once instead of one, massively increasing yarn production. Angry workers attacked inventor James Hargreaves' home, destroyed his machines, and forced him to flee to Nottingham. https://express.adobe.com/page/BCZqO/ https://redd.it/1vh54pb @r_til
TIL that the Fitch barrier, consisting of sand-filled plastic barrels often found between a highway and an exit lane, was invented by race car driver John Fitch after the 1955 24 Hours of Le Mans when his co-driver, Pierre Levegh, and 84 spectators died in the worst accident in racing history https://en.wikipedia.org/wiki/Impact_attenuator https://redd.it/1vh8wgs @r_til
TIL that in 1184, about 60 German nobles drowned in liquid excrement when the floor of a meeting hall in Erfurt collapsed under their weight and dropped them into the latrine cesspit below. https://en.wikipedia.org/wiki/Erfurt_latrine_disaster https://redd.it/1vha7r0 @r_til
TIL Ken Jennings’s famous Jeopardy streak almost never happened. On his first game, his Final Jeopardy answer was just “Jones” for Marion Jones. Trebek accepted it, saying, “in terms of female athletes, there aren’t that many.” https://en.wikipedia.org/wiki/Ken_Jennings#Career https://redd.it/1vhipy5 @r_til
TIL Hank Aaron tied Babe Ruth's career homerun total (714) in Cincinnati on April 4th, 1974. But when he failed to break the record the next day in Cincinnati, the Braves made him sit out the next game (also in Cincinnati) so he could break the record back home in Atlanta, which he did on April 8th. https://www.mlb.com/news/braves-celebrate-hank-aaron-715-home-run-50th-anniversary https://redd.it/1vg0je0 @r_til
TIL that despite winning the Battle of Grunwald, the Polish-Lithuanians actually failed to take the Teutonic Order's capital, Marienburg, because they marched too slowly. This gave the Knights enough time to prepare their defenses and win the siege, recapturing several occupied castles afterwards. https://en.wikipedia.org/wiki/Battle_of_Grunwald#Aftermath https://redd.it/1vg478b @r_til
TIL Earth's Moon is the largest and heaviest satellite in relation to its parent planet in our Solar system https://en.wikipedia.org/wiki/Moon#Earth%E2%80%93Moon_system https://redd.it/1vg0us4 @r_til
Showing the 12 most recent of 20 posts we hold for @r_til. 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 30 September 2026 — this entry's latest reading, not the date you are reading this.
“r/TodayIlearned” (@r_til), 199 subscribers as measured 30 September 2026. Telegram Register, tgregister.com/channel/r_til.
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.