Watch SpaceX's spectacular first Falcon Heavy night launch live

SpaceX is going to launch a Falcon Heavy rocket for only the third time ever tonight, should all go according to the current mission plan. The launch, set to take place during a four-hour launch window that opens at 11:30 PM EDT (8:30 PM PDT) [UPDATE: The launch is now targeting 2:30 AM EDT (11:30 PM PDT), which still falls within the four-hour launch window] tonight, will lift off from Launch Complex 39A at Florida's Kennedy Space Center. On its first-ever nighttime launch, Falcon Heavy's STP-2 mission will carry a cargo made up of a number of payloads from commercial customers, as well as from the U.S. Department of Defence, the National Oceanic and Atmospheric Administration (NOAA) and NASA.