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  BY JUSTIN RAY Follow the countdown and launch of the Boeing Delta 2 rocket with the U.S. Air Force's GPS 2R-8 navigation spacecraft. Reload this page for the very latest on the mission. Read our earlier Mission Status Center coverage.
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Snapshot  (Top) The "Let's Roll" commemorative artwork flying on the nose of the Delta 2 rocket to salute the heroes of September 11. Credit: Air Force. (Bottom) Delta 2 rocket blasts off Wednesday. Photo: Boeing TV/Spaceflight Now  Pre-launch briefing Launch timeline - Chart with times and descriptions of events to occur during the launch. Global Positioning System - Description of the U.S. Air Force's space-based navigation network. GPS constellation - Chart shows the current status of the orbiting GPS satellite fleet. XSS-10 - The experimental microsatellite flying as a secondary payload on this launch. Delta 2 rocket - Overview of the Delta 2 7925-model rocket used to launch GPS satellites. SLC-17 - The launch complex where Delta rockets fly from Cape Canaveral. Delta directory - See our coverage of preview Delta rocket flights. Flight Data File Vehicle: Delta 2 (7925-9.5) Payload: GPS 2R-8 Launch date: Jan. 29, 2003 Launch window: 1:06-1:20 p.m. EST (1806-1820 GMT) Launch site: SLC-17B, Cape Canaveral, Florida Satellite broadcast: AMC 2, Transponder 4, C-band Earth Calendar 
NEW! This amazing 2003 calendar features stunning images of mountain ranges, volcanoes, rivers, and oceans obtained from previous NASA space shuttle missions .  U.S. STOREU.K. & WORLDWIDE STOREHubble Calendar 
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