TORONTO, April 19, 2004 -- York University’s Gravity Probe B team will resume the countdown watch tomorrow after the launch was postponed four minutes before lift off today due to high winds in the upper atmosphere.

Gravity Probe B, the $US700 million mission to test Einstein’s General Theory of Relativity, is now scheduled for launch from Southern California’s Vandenburg Air Force Base at 11:01 a.m. Eastern Time, Tuesday.

York U’s GP-B team members are available for interviews as follows:

Norbert Bartel – attending launch in California, call 416-736-2100 ext. 22091 to arrange contact
Michael Bietenholz – 416-736-2100 ext. 60259
Ryan Ransom
Jerusha Lederman – 416-736-5424 / 416-708-2268

For more information on Gravity Probe B visit http://einstein.stanford.edu/.

For information on Astronomy Films production of “Testing Einstein’s Universe” visit www.astronomyfilms.com.

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For more information, please contact:

David Fuller
Media Relations
York University
416-736-2100, ext. 22091
dfuller@yorku.ca