In the the pre-dawn hours at Kennedy Space Center in Florida, after a one-day delay caused by high winds, SpaceX successfully launched humans into space from U.S. shores for the third time in less than a year.

But this time, the astronauts sailed into orbit atop a reused Falcon 9 rocket booster—the same booster that sent the Crew-1 mission to the International Space Station last November. They are also riding aboard a used spacecraft: the same Dragon capsule, called Endeavour, that NASA astronauts Bob Behnken and Doug Hurley flew during their Demo-2 test flight last May. On that mission, Behnken and Hurley became the first