› added 2 years ago

110

TIL that there’s such a thing as basically turtle wax for actual turtles.

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NLJQ TIL in 1859, an aurora was so powerful that it allowed telegraph operators to communicate without batteries and solely from the charge emitted from the aurora.
e0lvk TIL that despite it’s more than half a century old, SR-71 Blackbird still holds the official Air Speed Record for a manned airbreathing jet aircraft with a speed of 2,193 mph (3,530 km/h)!
oJB7 TIL Canada abruptly cancelled the development of its own fighter jet (Avro Arrow) in the 1950s in favour of Nuclear missiles (Bomarcs). All the engineers left for NASA thereafter.
oRxV7 TIL about the only double barrel cannon in the world. When it was its first tested during the American Civil War, the chain snapped immediately and one ball tore into a nearby cabin, knocking down its chimney; the other spun off erratically and struck a nearby cow, killing it instantly.
pYyAb TIL there's a estimated 70% chance a earthquake of about M7 will hit Tokyo in the next 30 years.