Q&A with Andrew Driesman, project manager for Parker Solar Probe (members only)

An unpiloted test flight of Boeing’s Starliner crew capsule to the International Space Station will be delayed from its previous target launch date of April 2 until at least May, after the arrivals of Russian Soyuz and SpaceX Crew Dragon ships bringing fresh crew members to the orbiting complex, NASA officials said Monday.

A veteran Russian commander, Italian flight engineer and a rookie NASA astronaut lifted off at 1628 GMT (12:28 p.m. EDT) Saturday from the Baikonur Cosmodrome in Kazakhstan, kicking off a six-hour flight to the International Space Station. The crew docked with the station at 2248 GMT (6:48 p.m. EDT).

An Atlas 5 rocket carrying a classified national security satellite was rolled to the launch pad this morning for Thursday’s flight to bolster the U.S. intelligence-gathering space architecture.