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TIL The Asteroid Belt's mass is about 4% of the Moon. The four largest asteroids contain 60% of the belt's mass

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gkmW TIL that the California Highway Patrol (CHP) provides free roadside assistance to motorists stranded on California highways. This includes a gallon of gas, jumpstart, radiator fluid, hose patch, and a free tow if needed.
LkPLm TIL Led Zeppelin used to rent entire hotel sections and thrash them so much that they received multiple permanent bans from the establishments. Most notable being John Bohnam driving a motorcycle at a rented hotel floor
6ExkJ TIL becoming a librarian requires a master's degree
d7bZ TIL that the Airbus A380 jumbo jet was so well insulated from engine noise that the pilots couldn’t sleep during their rest periods as they could hear every crying baby, snoring passenger, and toilet flush. To combat the problem, Airbus was considering piping ambient noise back into the plane.
EgE80 TIL the special effect in sci-fi movies of a 2D ring of energy or matter emanating from an explosion is called the 'Praxis Effect', named after the visual effect of the explosion of the planet Praxis in Star Trek VI. Other uses include the seismic charges in Star Wars Attack of the Clones.