SpaceX plans to launch the secret Zuma payload for the U.S. government this evening (Jan. 7), after a nearly two-month delay.
Zuma is scheduled to lift off atop a two-stage Falcon 9 rocket from Florida's Cape Canaveral Air Force Station tonight between 8 p.m. and 10 p.m. EST (0100 to 0300 GMT on Jan. 8). You can watch it live here at Space.com, courtesy of the company. You can also watch the liftoff directly from SpaceX's live webcast page here.
Sunday's launch will also include a landing attempt by the Falcon 9's first stage, which will come back down to Earth at Landing Zone 1, a SpaceX facility at Cape Canaveral. To date, SpaceX has pulled off 20 such first-stage landings, which are part of its push to develop fully and rapidly reusable rockets. [SpaceX's Zuma Launch: Here's What We Know]
Zuma is a U.S. government spacecraft headed to low-Earth orbit. But that's pretty much all that outside observers know about it; everyone involved with the mission has remained pretty tight-lipped.
https://www.space.com/39310-spacex-mysterious-zuma-mission-launch-webcast.html