The Starliner crew was originally meant to stay on board the ISS for a week, but issues with Boeing's Starliner spacecraft severely delayed their return to Earth.

Astronauts Butch Wilmore and Suni Williams are finally returning from the International Space Station. But how did the Starliner mission go wrong in the first place? And why have its failings become politicized?

Speaking at an industry event in Washington, Michelle Parker, a VP for the aerospace giant, insisted space was “core” to the business.