Even after pouring $2 billion into its much-maligned Starliner spacecraft, NASA and Boeing remain committed to getting back off the ground. As Ars Technica reports, the head of NASA's commercial crew program, Steve Stich, revealed last week that Boeing and its propulsion supplier, Aerojet Rocketdyne, are making considerable changes to the astronaut shuttle following a disastrous first crewed mission to the ISS last year. The spacecraft experienced several "in-flight anomalies," forcing NASA to have it return to the Earth's surface without NASA astronauts Suni Williams and Butch Wilmore, who were left stranded on board the International Space Station for nine […]