Video: Animation of Vulcan launch

U.S. military officials said Tuesday the launch of the next satellite for the GPS navigation network — planned for April 29 on a SpaceX Falcon 9 rocket — has been delayed to no earlier than June 30 to avoid exposing launch crews to the COVID-19 viral disease. However, the next launch of the military’s X-37B spaceplane remains on track for liftoff in May on a United Launch Alliance Atlas 5 rocket, officials said.

Kirk Shireman, NASA’s program manager for the International Space Station, is retiring from the space agency later this month to take a position in private industry.

Russian commander Sergey Ryzhikov, flight engineer Sergey Kud-Sverchkov, and NASA astronaut Kate Rubins climbed into their Soyuz landing craft and undocked from the International Space Station at 9:34 p.m. EDT Friday (0134 GMT Saturday). The trio touched down on the barren steppes of Kazakhstan at 12:56 a.m. EDT (0456 GMT) to wrap up six months in orbit.