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The research argues that gravitational waves give off echoes which, if confirmed, would prove that black holes don't exist and are, in fact, wormholes.

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rK0e TIL Charlie Chaplin was born 4 days before Hitler and his character, Tramp, has the same mustache as him. This and being named a Jew and placed on a hitlist by Nazis inspired his film, The Great Dictator, where in the last speech he is actually talking to the audience as himself, not a character
loQgV TIL the sound mourning doves make while flying when startled is NOT a vocalization, but a "wing whistle" that is a natural alarm system to alert other birds to potential predators
9Yb17 TIL the surface pressure of Venus is so high that it would collapse the hull of modern military submarines. The surface pressure on Venus is over 90 bar which is equivalent to 900 meters below the surface of the ocean.
PYw5n TIL that “Golden Girl” Bea Arthur enlisted in the Marines in 1943 where she was one of the first members of the Women’s Reserve and spent time as a typist and a truck driver.
doW8 TIL a McDonald’s Caesar Salad has more calories, fat and salt than a Double Big Mac burger