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For release: 04/19/04
Release #: 04-112

NASA announces Gravity Probe B launch

The Gravity Probe B (GP-B) launch is scheduled for 12:57 p.m. EDT Tuesday from Vandenberg Air force Base, Calif.

The mission will test two important predictions of Albert Einstein's general theory of relativity. The 18-month mission will launch on board a Boeing Delta II launch vehicle. NASA TV will carry the launch live.

NASA TV is available on AMC-9, transponder 9C, C-Band, located at 85 degrees west longitude. The frequency is 3880.0 MHz. Polarization is vertical, and audio is monaural at 6.80 MHz.

For the complete NASA TV schedule on the Internet, visit:

For information about GP-B on the Internet, visit:


For more information:
New flagNote to editors
Launch details
News release
Press kit (PDF, 11.3 MB)
More Gravity Probe B news

Don Savage
NASA Headquarters
(202) 358-1547

Steve Roy
Public Affairs Office
(256) 544-0034

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