Boeing's Starliner goes back to the factory: NASA launch on hold

Boeing is moving the troubled Starliner back to its factory, after NASA scrubbed the spacecraft’s launch last week over valve failures in the propulsion system. The Orbital Flight Test-2 (OFT-2) had been intended to show that the CST-100 could safely reach the International Space Station and return, but instead it revealed things still weren’t quite ready for primetime. 13 key …