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  United Launch Alliance’s first Vulcan rocket prepares to emerge from the Vertical Integration Facility at Cape Canaveral Space Force Station in Florida. [credit:
  United Launch Alliance ]

CAPE CANAVERAL, Fla.—United Launch Alliance’s first Vulcan rocket emerged from its hangar Friday for a 30-minute trek to its launch pad in Florida, finally moving into the starting blocks after a decade of development and testing.

This was the first time anyone had seen the full-size 202-foot-tall (61.6-meter) Vulcan rocket in its full form. Since ULA finished assembling the rocket last month, it has been cocooned inside the scaffolding of the company’s vertical hangar at Cape Canaveral Space Force Station.

On Friday, ULA’s ground crew rolled the Vulcan rocket and its mobile launch platform to its seaside launch pad. It was one of the last steps before the Vulcan rocket is cleared for liftoff Monday at 2:18 am EST (07:18 UTC). On Sunday afternoon, ULA engineers will gather inside a control center at Cape Canaveral to oversee an 11-hour countdown, when the Vulcan rocket will be loaded with methane, liquid hydrogen, and liquid oxygen propellants.