Watch live as Elon Musk unveils his vision for missions to Mars

NASA announced Friday a mix of spaceflight veterans and rookie astronauts who will launch on the first flights of new Boeing and SpaceX commercial spaceships starting as soon as next spring, several months later than previously scheduled.

The launch of 10 more upgraded spacecraft aboard a SpaceX Falcon 9 rocket Friday will complete the build-out of Iridium’s modernized $3 billion global communications network, setting up for the debut of new broadband and aircraft tracking services in the coming months.

Spaceflight Now editor Stephen Clark spoke live to International Space Station astronauts Shane Kimbrough and Megan McArthur about their mission Friday.