Chief executive George Whitesides says new spacecraft is nearly ready . He said it could begin test flights by the end of this year . Its predecessor was destroyed in the Mojave Desert on 31 October 2014 . Comment:
Chief executive George Whitesides says new spacecraft is nearly ready . He said it could begin test flights by the end of this year . Its predecessor was destroyed in the Mojave Desert on 31 October 2014 . Co-pilot Michael Alsbury was killed and pilot Peter Siebold was injured .