minus-squareSapientLasagna@lemmy.catoAsklemmy@lemmy.ml•What's a piece of esoteric knowledge you have?linkfedilinkarrow-up1·24 days agoAnd this was required because the SR-71 started flying in 1966, and the first GPS satellite didn’t launch until 1978. The full GPS constellation wasn’t finished until 1990. linkfedilink
And this was required because the SR-71 started flying in 1966, and the first GPS satellite didn’t launch until 1978. The full GPS constellation wasn’t finished until 1990.