The monstrous Stratolaunch airplane finally rolled out of its hangar in Mojave, Calif., Wednesday, showing off its complete twin-hulled majesty for the first time. It will now spend many months on ground tests before a first flight. And it’s not expected to be used to launch a rocket into space — a mission that some observers are skeptical will ever make business sense — any sooner than 2019.
World’s largest airplane emerges from its lair
