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TIL that in 1572, Tycho Brahe spotted a "new star" that briefly outshone Venus and was seen in daylight. This supernova was exploding around 9,000 light-years away, 300 million times brighter than the Sun, and visible naked-eye for 16 months. It shattered medieval ideas that the stars never change.

Read more space.com

via reddit.com

nWm09 TIL fish can recognize themselves in mirror reflections and photos
ZpjGD TIL the German railway company, Deutsche Bahn, has computers that still run on Windows 3.1. They recently posted a vacancy for a Windows 3.11 Administrator with preference given to those who also had MS-DOS experience.
6EE5X TIL There are roughly 10 quadrillion ants on earth
nW417 TIL that Picasso carried around a gun to shoot blanks at people he found dull.
EL0 TIL that the “state meal” of Oklahoma is fried okra, squash, cornbread, barbecue pork, biscuits, sausage and gravy, grits, corn, strawberries, chicken fried steak, pecan pie, and black-eyed peas.