Date: September 25th 2007

Sept 24, 2007

Katherine Trinidad Headquarters, Washington 202-358-3749 katherine trinidad@nasa gov

George Diller Kennedy Space Center, Fla 321-867-2468 george h diller@nasa gov

MEDIA ADVISORY: M07-121

NASA POSTPONES DAWN SPACECRAFT LAUNCH

CAPE CANAVERAL, Fla -- The launch of NASA's Dawn spacecraft aboard a United Launch Alliance Delta II rocket has been postponed 24 hours Fueling of the launch vehicle's second stage was unable to be completed on Sunday because of weather conditions at the launch pad

The launch now is scheduled for Thursday, Sept 27, at the opening of a window that extends from 7:20 a m to 7:49 a m EDT For reporters planning to establish remote cameras at the launch pad, set up has been rescheduled and will take place at 9 a m on Wednesday, Sept 26

The prelaunch news conference is scheduled for 1 p m , Tuesday, Sept 25 Live launch coverage on NASA Television is set to begin Thursday at 5:15 a m

For NASA TV streaming video, scheduling and downlink information, visit:

http://www nasa gov/ntv

For more information about Dawn, visit:

http://www nasa gov/dawn

-end-

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