An National Transportation Safety Board (NTSB) team surveys a tail section from the crashed Virgin Galactic SpaceShipTwo near Cantil, California, on November 01, 2014. British tycoon Richard Branson insisted Saturday his dream of commercial space travel remained alive but warned his company would not "press on blindly" without knowing what caused the spacecraft crash that killed one pilot and seriously injured another on October 31. Speaking to reporters after arriving in the California facility which had been the hub of Virgin Galactic's ambitious space program, Branson said safety remained his paramount concern. "We owe it to our test pilots to find out exactly what went wrong, and once we've found out what went wrong, if we can overcome it, we'll make absolutely certain that the dream lives on," Branson told reporters. His comments at the Mojave Air and Space Port came as a team of federal investigators began probing the causes of Friday's accident, which dealt a devastating setback to the cause of commercial space tourism. AFP PHOTO/JOSH EDELSON        (Photo credit should read Josh Edelson/AFP via Getty Images)