BY JUSTIN RAY Follow the preparations and launch of the Orbital Sciences Pegasus rocket with NASA's SORCE spacecraft. Reload this page for the very latest on the mission.				Flight data file Vehicle: Pegasus XL Payload: SORCE Launch date: Jan. 25, 2003 Launch window: 3:10-4:08 p.m. EST (2010-2108 GMT) Mission staging site: Cape Canaveral, Florida Satellite broadcast: AMC 2, Transponder 9, C-band Pre-launch briefing Launch timeline - Chart with the key events to occur during the launch. Ground track - Map with the path the rocket will follow into space. SORCE - Facts and info on the NASA satellite being launched. Pegasus - Overview of the air-launched Orbital Sciences rocket.