SpaceX postponed a Falcon 9 launch that was set for Sunday from Kennedy Space Center due to heavy clouds, rain, and strong winds. The Starlink mission was set to deploy 29 more satellites into low-Earth orbit, but launch officials stopped the countdown as lightning and gusts up to 50 knots threatened safety. The next attempt is scheduled today, during a window that opens at 4:14pm and closes at 8:18pm.