WASHINGTON — SpaceX launched 30 satellites Dec. 21 on the second in a series of dedicated rideshare missions to mid-inclination orbits. A Falcon 9 lifted off from Vandenberg Space Force Base in California at 6:34 a.m. Eastern on the Bandwagon-2 mission. The Falcon 9 first stage, making its 21st flight, make a landing back at the launch site 8 minutes and 15 seconds after liftoff, just as the second stage completed its burn. SpaceX did not provide details about the deployment of the 30 payloads on the rocket, but over…