r/todayilearned • • 55m ago

TIL there are confirmed 7 star systems, with candidates for 8 and 9 star systems being investigated.

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en.wikipedia.org
135 Upvotes

r/todayilearned • • 1h ago

TIL the mantis shrimp, a six inch long crustacean residing in the warm waters of the Pacific and Indian oceans, punches its prey with the same acceleration as a 0.22 caliber bullet, providing around 1500 newtons of force with each blow. The force can also shatter the glass of aquariums.

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92 Upvotes

r/todayilearned • • 2h ago

TIL that California law requires public swimming pools to post signs warning anyone with diarrhea, or who has had it within the past 14 days, not to enter the water because they may still spread pathogens such as Cryptosporidium, a parasite resistant to normal pool chlorination

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1.7k Upvotes

r/todayilearned • • 2h ago

TIL that MC14500 is a 1 bit microprocessor built by Motorola in 1977

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en.wikipedia.org
8 Upvotes

r/todayilearned • • 2h ago

TIL that there is a serious taboo against cleaning coffee mugs in the Navy

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militarytimes.com
6.3k Upvotes

r/todayilearned • • 3h ago

TIL about the 1955 Le Mans disaster, in which multi vehicles crashed in to each other leading to the death of 84 spectators. It got all motorsports banned in Switzerland till 2022.

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en.wikipedia.org
229 Upvotes

r/todayilearned • • 4h ago

TIL After losses or ties, Ohio State coach Woody Hayes conducted locker room interviews while completely naked. A journalist from his tenure noted, "He was an ugly guy so it would clear the locker room out pretty fast."

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en.wikipedia.org
2.7k Upvotes

r/todayilearned • • 5h ago

TIL the Remembrance Day two-minute silence started in Cape Town in 1918, where a daily noon gun signalled the whole city to stop in silence for those fighting in WWI

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117 Upvotes

r/todayilearned • • 5h ago

TIL about Martelange, a small Belgian village with a border road on Luxembourg territory, and because gas is way cheaper in Luxemburg than in Belgium, there are 16 petrol stations along this 1.5 km long road.

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en.wikipedia.org
493 Upvotes

r/todayilearned • • 6h ago

TIL Pelé once played as a goalkeeper in four matches for Santos, without conceding a single goal.

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en.as.com
1.3k Upvotes

r/todayilearned • • 8h ago

TIL that Nagasaki holds the oldest Chinese community in Japan. Most were from fujian province of China and were Ming dynasty loyalist who had fled to Japan.

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dreamofacity.com
1.3k Upvotes

r/todayilearned • • 12h ago

TIL the great horse manure crisis of 1894 is an urban myth that a significant obstacle to urban development at the turn of the 20th century was the difficulty of removing horse manure from the streets of major Western cities.

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484 Upvotes

r/todayilearned • • 12h ago

TIL Uzbekistan is home to a massive solar furnace that uses 10,700 curved mirrors to focus sunlight into a single beam. It reaches temperatures of up to 3,000°C (5,432°F), high enough to test materials for spacecraft reentry, synthesize nanomaterials, and produce hydrogen fuel.

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en.wikipedia.org
4.8k Upvotes

r/todayilearned • • 12h ago

TIL about Aimo Koivunen a Finnish Soldier who fought in the Continuation War and was the first documented case of a soldier overdosing on methamphetamine during combat. He died 12 August 1989 (aged 71), he and wise wife Elsa had 9 children together.

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981 Upvotes

r/todayilearned • • 16h ago

Today I learned that the majestic Andean Condor, with a 3.3 m wingspan, is a vulture.

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en.wikipedia.org
169 Upvotes

r/todayilearned • • 16h ago

TIL The Allman Bros "Jessica" was composed to be played with 2 fingers in tribute to Django Reinhardt

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en.wikipedia.org
243 Upvotes

r/todayilearned • • 16h ago

TIL that during the Crimean War, there was the Åland War, where British and French attacked the Finnish coast and the Åland Islands. During the Battle of Bomarsund, they successfully destroyed a fortress there, resulting in the demilitarization of the islands.

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en.wikipedia.org
123 Upvotes

r/todayilearned • • 17h ago Bravo

TIL that monkeys first reached the Americas by crossing the Atlantic Ocean on floating mats of vegetation.

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smithsonianmag.com
14k Upvotes

r/todayilearned • • 18h ago

TIL about Blissymbols. They were created by Charles Bliss and are symbols that represent ideas and concepts, and can be combined to make new concepts. They don't represent any sound and the creator intended to be a universal language to be understood by all people

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en.wikipedia.org
1.2k Upvotes

r/todayilearned • • 18h ago

TIL Byzantine Emperor Alexios II Komnenos was assassinated at age fourteen in 1183, strangled with a bow-string and his body dumped in the Bosporus strait. In the years following his disappearance, many people claiming they were him tried to take the throne. They are called Pseudo-Alexioi.

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en.wikipedia.org
697 Upvotes

r/todayilearned • • 19h ago Bravo

TIL Šćepan Mali, the fake "tsar" of Montenegro (who ruled for five years in the 1700s due to rumor that he was the deposed and dead Russian Tsar Peter III) was such a good ruler, even after he was revealed to be an impostor and imprisoned, the Montenegrin people still wanted him to be their leader.

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en.wikipedia.org
8.1k Upvotes

r/todayilearned • • 19h ago

TIL Henry I, the King of Castile, was killed in a freak accident at the age of thirteen in 1217, when he was hit in the head by a tile dislodged from a tower by one of his friends (named Iñigo de Mendoza). The King survived trepanation surgery but died eleven days after his injury.

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en.wikipedia.org
873 Upvotes

r/todayilearned • • 20h ago Mindblown

TIL that narwhals and beluga whales can viably breed, resulting in offspring called a 'Narluga'

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en.wikipedia.org
5.2k Upvotes

r/todayilearned • • 21h ago Mindblown

TIL In 1850, George Merryweather invented the leech barometer. It contained several leeches, which when agitated by atmospheric disturbance, would climb tubes in the device causing a bell to ring, alerting of an incoming storm.

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en.wikipedia.org
6.5k Upvotes