Video: Falcon 9 with Crew Dragon briefly ignites engines (members only)

A dramatic automatic abort 7.5 seconds before the planned liftoff of a United Launch Alliance Delta 4-Heavy rocket Saturday night kept the towering launcher on the pad at Vandenberg Air Force Base, California, with a top secret spy payload for the National Reconnaissance Office.

SpaceX technicians are attaching a Japanese communications satellite to the top of a Falcon 9 rocket ahead of a planned launch Thursday morning from Cape Canaveral.

Two weeks into its mission of exploration on Mars, NASA’s Perseverance rover is doing an “exceptional job” and has completed its first test drive, mission managers said Friday.