SpaceX poised for 50th launch of Falcon 9 rocket

SpaceX is poised for the 50th launch of its signature Falcon 9 rocket early Tuesday, marking a swift ascent to a milestone many aerospace giants take far longer to attain. The launch of the Falcon 9 carrying the Hispasat, a Spanish telecommunications and broadband satellite, is scheduled for 12:33 am (0533 GMT) from Cape Canaveral Air…