July 6, 2007 Tabatha Thompson Headquarters, Washington 202-358-3895 George Diller Kennedy Space Center, Fla. 321-867-2468 MEDIA ADVISORY: M07-083 DAWN LAUNCH MOVES TO NO EARLIER THAN MONDAY JULY 9 CAPE CANAVERAL, Fla. - The launch of NASA's Dawn spacecraft aboard a Delta II rocket has been rescheduled to no earlier than Monday, July 9. Because of difficulties with a downrange telemetry aircraft and the availability of a tracking ship, a launch attempt cannot be made before that time. Also, Friday's weather forecast raised the possibility that the loading of propellants aboard the Delta II rocket's second stage might not be completed in time to support a launch before Monday. The launch window for Monday is 3:56 p.m. to 4:25 p.m. EDT. According to weather forecasts, there is a 40 percent chance of unfavorable conditions for launch. If a launch attempt is targeted for Monday, the prelaunch press conference will be held at 1 p.m. on Sunday, July 8, at NASA's Kennedy Space Center press site. Media should call 321-867-2525 for launch updates, status changes and instructions on how to monitor or attend Sunday's press conference. The press conference and launch will be broadcast live on NASA Television. For more information about Dawn, visit: http://www.nasa.gov/dawn -end- To subscribe to the list, send a message to: hqnews-subscribe@xxxxxxxxxxxxxxxxxxxxxx To remove your address from the list, send a message to: hqnews-unsubscribe@xxxxxxxxxxxxxxxxxxxxxx