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TIL The largest submarine ever made is 175m long and was built by the Russians in 1980. It has a swimming pool, sauna and winter garden for its crew and is still in active service today.

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rNEEM TIL about Soviet Zveno aircraft carrier planes. The converted bombers would carry fighters or dive bombers beyond their operational limitation, and launch them when needed. Despite being based on pre-WWII bombers and going through many configuration changes, they had a very high success rate.
Y7myx TIL Cao Xueqin is considered to be China's greatest novelist, but little is known of his life. He spent ten years writing "A Dream in Red Mansions" from 1740 to 1750 but the last chapters were written by a different author. The novel was not published until 1791, nearly 30 years after Cao's death
KOMKE TIL That, despite the relative rarity of ring galaxies, our photograph of Hoag's Object reveals yet another ring galaxy in the background.
6EOWQ TIL that locusts are mutated grasshoppers. When an abundance of food is followed by a drought they are forced to group, causing the insect to mutate in a matter of hours from green to brown, solitary to swarming, and become long distance flyers. Up until 1920 they were considered 2 different species
DnNP TIL that the first “men’s rights movement” dates to the 1920s; under the slogan of “equal rights for men”, they opposed alimony, child support, and “the favoritism of the authorities in favor of women”