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TIL William Huggins’s first spectroscopic observations, published in 1863, showed that stars are composed of the same elements that occur on the Sun and Earth

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jPJE TIL that a Roadrunner’s top speed is 20 MPH while Coyotes can reach speeds of up to 43 MPH
neoeo TIL that in the 17th century, lacking chemical tests (and knowledge of disease transmission), Italian physician and autopsy pioneer Antonio Valsalva sometimes tasted the fluids he encountered in cadavers in an effort to better characterize them. "Gangrenous pus does not taste good," he wrote.
mxvmE TIL: President Ulysses S. Grant was born Hiram Ulysses Grant but changed his name at West Point to avoid having his military uniforms marked with initials "H.U.G."
Oo9OY TIL that Rube Goldberg was actually a cartoonist, and not a physicist or inventor. He drew imaginary inventions by a character named "Professor Butts"
Rr0w TIL that the US Centers of Disease Control and Prevention recommends US travelers to Iceland to get vaccines for rabies because they might be bitten by bats. There are only 20 documented cases of bat sightings in Iceland - ever.