Delta IV Heavy: watch the takeoff of the world’s second most powerful rocket live


The Delta IV Heavy rocket served as the backdrop for a 3D projection at Cape Canaveral before its launch. ULA

Update: A pneumatic examination is in progress starting at 10:13 p.m. PT, with the countdown stopped at 4 hours and 15 minutes. The launch time is set to be delayed.

One of the largest rockets in business today prepares to take off from Cape Canaveral, Florida on a national security mission for the US National Reconnaissance Office, or NRO.

A United Launch Alliance Delta IV heavy rocket will carry a classified spy satellite into orbit Wednesday evening and early Thursday morning. Delta IV Heavy performed other NRO missions and also dispatched the Parker solar probe on his way to observe our sun.

The lifting capacity of the Delta IV Heavy is currently only second SpaceX Falcon Heavy. It looks like the Falcon Heavy, with its three base boosters making up its main body.

Unlike the Falcon Heavy, ULA does not attempt to land its Delta boosters. Instead, they will be spent and will fall into the Atlantic Ocean.

Any launch of a three-barrel heavy-lift rocket is always a sight to see, and ULA will be broadcasting the launch live, which you can watch via the stream here on this page.

The launch is scheduled for Wednesday at 11:12 p.m. PDT at 2:12 a.m. Florida time.

If you’re in Florida, the rocket will be visible from much of the state as it ascends into orbit, according to this graphic guide provided by ULA.



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