Virgin Galactic’s SpaceShipTwo Crashes in New Setback for Commercial Spaceflight

Marco Caceres, director of space studies at the Teal Group, a consulting firm, said that "in an age where it is very expensive to fly these vehicles, the pressure is to do the minimal amount of test flying."

"So that may be something we have to take a look at," he continued. "Everyone seems to be in need of more money to conduct more flights, so the pressure is to start operational flight too soon. Maybe we are being unreasonable here."