Articles by William Harwood

Around-the-clock work to fix valve problems that derailed an Aug. 3 attempt to launch Boeing’s Starliner crew capsule on an unpiloted test flight was called off Friday, delaying another try until after NASA launches a higher-priority asteroid probe in mid-October.

An Atlas 5 rocket was hauled back to its seaside firing stand Monday for launch Tuesday on a flight to boost Boeing’s Starliner crew capsule into orbit for a second unpiloted test to prove the commercial ferry ship is ready to carry astronauts.

Playing it safe, the seven-member crew of the International Space Station moved into the U.S. segment of the outpost Friday, closed hatches and window shutters and stood by while Russian flight controllers vented helium pressurization lines in the newly arrived Nauka lab module.

A heavyweight Russian laboratory module that experienced a variety of problems after launch last week docked at the International Space Station Thursday, but in a moment of unexpected drama, inadvertent thruster firings briefly knocked the sprawling complex out of its normal orientation.

NASA and Boeing held a day-long flight readiness review Thursday and cleared the company’s CST-100 Starliner astronaut ferry ship for launch July 30 on a second unpiloted test flight to the International Space Station.