Virgin Galactic Unveils New SpaceShipTwo 'Unity' for Space Tourists

VSS Enterprise, for what it's worth, made its first captive-carry flight in March 2010, and executed a total of 55 successful test flights before that fateful day in October 2014. The trial regime will not be as extensive or as lengthy for VSS Unity, since it's so similar to Enterprise, whose flights generated a wealth of data. "By and large, if you looked at serial number one and serial number two under the hood, you couldn't tell the difference," said Doug Shane, president of The Spaceship Co.