Video: Change of command aboard International Space Station

Astronauts Terry Virts and space station commander Barry “Butch” Wilmore ventured back outside Sunday for their third spacewalk in eight days to complete initial preparations for upcoming dockings by commercially developed Boeing and SpaceX crew ferry ships.

The head of the Russian space agency said this week that the the Gateway mini-space station NASA plans to build around the moon is “too U.S.-centric” and added that Russia unlikely to significantly contribute to the project.

SpaceX trucked its Crew Dragon Endeavour spacecraft — refurbished with a new heat shield and structural enhancements — across the Cape Canaveral spaceport this week for attachment to a Falcon 9 rocket ahead of a planned liftoff next Thursday with four astronauts heading to the International Space Station.