SpaceShipTwo fires her rocket motor in flight for 1st time on April 29, 2013. Credit: MarsScientific.com Updated with more Photos & Video[/caption] In a momentous and long awaited day in spaceflight, Virgin Galactic’s SpaceShipTwo (SS2) commercial spaceliner named “Enterprise” lit up her hybrid rocket engines in flight and reached supersonic speeds for the first time … Continue reading "SpaceShipTwo Fires Rocket Engines for First Ever Supersonic Test Flight- Photos & Video"