July 20, 2023: On the evening of July 19th, SpaceX launched a Falcon 9 rocket from Vandenberg Space Force Base in California. Sky watchers from southern California to Arizona witnessed a magnificent exhaust plume. At the San Francisco Volcanic Field north of Flagstaff, photographer Jeremy Perez saw something extra: "After the rocket passed overhead, a…
SpaceX's Falcon 9 is a reusable, two-stage rocket designed to reliably transport people and cargo into orbit. Joe Skipper/Reuters A physicist says a SpaceX…