SpaceX continued its post-mishap resurgence with the first of planned back-to-back launches in the early morning hours of Sunday. It staged two of its Falcon 9 rockets to launch from its pads in both Florida and California. First up was the Starlink 10-4 mission, which added a batch of 23 Starlink Version 2 Mini satellites to its growing mega-constellation. Liftoff happened at 1:09 a.m. EDT (0509 UTC). This was also the 300th launch of a flight-proven booster for SpaceX."