Space station astronauts closed hatches to the SpaceX Crew Dragon spacecraft Thursday, setting the stage for undocking early Friday and a fiery unpiloted plunge to splashdown off the coast of Florida. A successful return to Earth will help clear the way for launch of the first piloted test flight of the new ferry ship in the mid-summer timeframe.

A groundbreaking Friday ceremonially commenced construction of an astronaut access tower at United Launch Alliance’s Atlas 5 launch pad in Florida, a 200-foot-tall gantry that will add to the future of U.S. human spaceflight.

Watch live views from the Kennedy Space Center’s launch pad 39A as SpaceX prepares for the first flight of the Block 5 Falcon 9 rocket. The rocket is scheduled to launch the Bangabandhu 1 communications satellite no earlier than 10 May.