Live coverage: Atlas 5 countdown and launch journal

The launch of NASA’s Perseverance Mars rover has been delayed two days to July 22 after an issue with ground support equipment at the Kennedy Space Center held up encapsulation of the spacecraft inside the payload fairing of its Atlas 5 rocket.

The 8-million-pound mobile service tower is retracted from around the Atlas 5 rocket, revealing the 20-story-tall vehicle for liftoff from Vandenberg Air Force Base, California.

A new satellite built to extend a 24-year series of joint U.S.-European ocean observatories climbed away from a foggy California launch pad and sailed into orbit more than 800 miles above Earth on Sunday aboard a SpaceX Falcon 9 rocket.