When is a mishap not really a mishap?NASA has continued to twist itself into a pretzel over whether Boeing's CST-100 Starliner – now two months past its original return date – can be used to bring back its crew to Earth and whether a failure to do so would be classed as a mishap. The briefing, which did not feature any Boeing personnel, hinted at the turmoil behind the scenes at the US space agency as staffers grapple with the problem of Starliner's problematic thrusters amid the knowledge that a proven and operational spacecraft, in the form of the Crew...