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TIL Carl Sagan has a number named after him. Sagan’s number is approximately 300 sextellion and refers to the number of stars in the universe.

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9wbVG TIL: Explorers have found evidence that Neanderthals' and humans have been mating in ancient times more than expected over the past 2 decades from new DNA samples. In addition, scientists in 2013 found that they have a different penis as they lack penile spines and sleep around more than humans.
69Yw7 TIL the remains buried in the Vietnam portion of the Tomb of the Unknown Soldier were later identified as 1st. Lt. Michael Blassie. Today, the tomb sits empty.
QND8e TIL that a Canadian senior's living complex saw a petty feud sparked after one elderly man moved in with his young wife. The other residents claimed he violated the age limit, and the couple responded by removing doorknobs, egging cars and exposing an affair between a tenant and one of the owners.
lovrV TIL that the term and concept of "jay-walking" was introduced in the 1920's by the auto industry as part of a propaganda campaign to claim the roads for cars and shift the blame in accidents from cars to pedestrians. At the time "Jay" was a slur with a similar meaning to "redneck" or "hillbilly."
JYZy1 TIL A special 90mm solar telescope can show thousands of small (by solar standards) columns of hydrogen plasma in profile at the edge of the Sun. These short-lived features, as long as the diameter of the Earth, merge together to give the Sun’s edge a ‘furry’ appearance