The transporter for the Orbital Sciences Pegasus XL rocket rolls into the sunlight outside Orbital’s hangar at Vandenberg Air Force Base in California. The rocket is mated to NASA's NuSTAR spacecraft that is encapsulated in the Pegasus payload fairing. The transporter will move the vehicle to the runway ramp where it will be attached to the underside of Orbital’s L-1011 carrier aircraft. Image credit: NASA/Randy Beaudoin, VAFB March 9, 2012