Boeing, an important player in the US space program for decades, hopes that its Starliner manned spacecraft will deliver astronauts to the International Space Station and the moon.

A software issue that prevented an unmanned test capsule from docking with the space station caused NASA to launch a review; preliminary results highlight serious safety concerns.

Boeing may have to attempt another test launch to meet the requirements of NASA’s Commercial Crew Development Program, which would cost it $410 million.