Live coverage: Cygnus supply ship readied for station departure

Three space station crew members — two short timers completing a 10-day flight and a veteran cosmonaut who has logged a world record 879 days aloft over five missions — undocked from the International Space Station and returned to Earth Friday, landing safely on the steppe of Kazakhstan to close out a problem-free flight.

United Launch Alliance has completed stacking of the major elements of the Atlas 5 rocket assigned to power NASA’s Perseverance rover toward Mars, but the mission’s launch date has been pushed back three days to July 20 after teams repaired an issue with a crane in the Atlas 5’s assembly building.

Construction is complete on the first batch of 81 new satellites to overhaul Iridium’s mobile communications network, and the data relay stations will soon head from their factory near Phoenix to California’s hilly Central Coast for launch Sept. 11 on a SpaceX Falcon 9 rocket.