SpaceX experiences launch setbacks with Starlink and Falcon Heavy rockets.
SpaceX aborted the launch of 46 Starlink satellites due to concerns about the Falcon 9 rocket's landing, just 16 seconds before liftoff. The launch has been rescheduled for the following day. The Falcon 9 first stage is expected to return to Earth and land on the SpaceX droneship Of Course I Still Love You. Starlink is SpaceX's megaconstellation of satellites, which currently has about 4,000 operational satellites and could reach over 40,000 once complete.