boeing starliner spaceship gumdrop shaped white capsule with blue and black detailings docked to a wirey port high above blue earth with clouds
Boeing's Starliner spacecraft docked on the International Space Station.
  • Boeing's malfunctioning Starliner has left two NASA astronauts stuck in space.
  • NASA must choose whether to risk flying them home on Boeing's spacecraft or turn to Elon Musk's SpaceX for help.
  • It presents a dilemma for Boeing, which is facing questions over safety and quality control.

After years of delays, the launch of Boeing's Starliner spacecraft was meant to show the world that the aviation giant could challenge the likes of Elon Musk's SpaceX in the space race.