Last-minute problems forced a launch delay Monday for SpaceX’s mega rocket Starship, attempting a comeback following an explosion on the last test flight. The countdown got down to the 40-second mark,

While SpaceX has yet to confirm, according to the Federal Aviation Administration, liftoff is set to occur between 1 a.m. and 5:31 a.m. Wednesday from Cape Canaveral Launch Complex 40. The mission is known as Starlink 12-21. The payload is the next batch of SpaceX's Starlink internet satellites.