Now that Butch Wilmore and Suni Williams are home, ending a 9-month spaceflight, questions remain about the troubled Starliner they rode to orbit.

Boeing's troubled Starliner capsule that left two NASA astronauts on the International Space Station last year may need to fly a third uncrewed test flight before it carries astronauts again, agency officials said as the spacecraft's first crew had to return to Earth on a SpaceX capsule this week.