Live coverage: Delta 4 countdown and launch journal

Boeing has unveiled a new lightweight spacesuit, fitted with zippers, breathable stitching and plenty of Velcro, to protect NASA astronauts on trips to the International Space Station aboard the company’s CST-100 Starliner capsule.

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.

United Launch Alliance vows a “seamless” switch from the Atlas 5 to the new Vulcan rocket in launches of Boeing’s astronaut taxis.