SpaceX is launching another batch of 60 Starlink satellites to join its existing constellation, which will bring the total to 300 and be the third Starlink launch this year. The launch will also be a potentially record-setting demonstration of SpaceX’s Falcon 9 reusability, with the shortest turnaround time for a Falcon 9 first-stage between its previous mission and its next. The Falcon 9 booster being used today has already flown three times, including in May, July and December of 2019.