The screenshot below shows FlightRadar24's view of the airspace around Vandenberg Air Force Base at the moment last Friday's Starlink launch hit T-0. The closest airplane was just under nine miles from the launch site; earlier during the countdown, airplanes had circled to within 8.5 miles or so.
How close are airplanes allowed to get?
(Disappointingly, the Falcon 9 didn't have an ADSB transponder.)


