NASA says it won’t use Boeing’s Starliner capsule to bring two stranded astronauts back to Earth. Saturday’s decision is another black eye to Boeing’s reputation and another setback for the company’s troubled defense and space business. Boeing is better known for building passenger airplanes. But lately it has been getting even more revenue from its defense and space division. That business is struggling, however, because of losses from fixed-price government contracts like the one Boeing got from NASA for Starliner. The company is on the hook for delays and cost overruns in the space capsule program.