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TIL of "RP FLIP" - a boat designed to "sink." More accurately, it intentionally floods itself and as the name implies - flips onto the side. This is done to provide an ideal environment for oceanographic research. The cabins are designed for both sideways and normal habitation.

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Wn94 TIL that a single asteroid, named Hebe, is the origin of about 40% of the meteorites that hit Earth.
gMJ8b TIL earthlings have emerged so early in the universe that 92% of earth-like planets aren't even born yet. The universe is about 13.8 billion years old and the last star will die after 100 trillion years.
oB1bK TIL of PFOA or C8, better known as Teflon. Teflon(PFOA) is considered a "forever chemical" in that there is no naturally occurring process that can break it down. It's now found in the blood of 98% of humans in the U.S. And is specifically linked to 6 cancers/health aliments.
4kENo TIL that Lynyrd Skynyrd and Neil Young feuded over Young's diss lyrics on 'Southern man" and "Alabama". They eventually squashed the beef before Ronnie Van Zandt's death. Young will still occasionally cover Sweet Home Alabama in live shows
j6M5n TIL that Mozart was not actually buried in a mass grave. The term 'common grave' in Vienna meant a grave for a non-aristocrat, which the city was permitted to dig back up after a decade and reuse.