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Gravity Probe B

Testing Einstein's Universe

MISSION UPDATE — April 26, 2011

Public Announcement of GP-B Final Experimental Results

Einstein's predicted geodetic and frame-
dragging effects, and the Schiff Equation for calculating them.
Einstein's predicted geodetic and frame-
dragging effects, and the Schiff Equation
for calculating them.
(Click to enlarge image.)

Press and Media Event at NASA Headquarters

After 34 years of research and development, 10 years of flight preparation, a 1.5 year flight mission and 5 years of data analysis, our GP-B team has arrrived at the final experimental results for this landmark test of Einstein’s 1916 general theory of relativity.

Next week, in a public press and media event at NASA Headquarters, GP-B Principal Investigator, Francis Everitt will announce the final results, and four other panelists will discuss various aspects of the program, its many accomplishments and the significance of the results to physicists and the scientific community at large.

The panel presentations will be followed by a Question and Answer session for members of the press and media and others present in the NASA auditorium, as well as press and media representatives linked-in from other NASA centers.

NASA Headquarters Auditorium
300 E. Street SW
Washington, DC 20546-0001
Date: Wednesday, May 4, 2011
Time: 1:00-2:00 pm EDT

NASA TV and Webcast Event Coverage

This GP-B press and media event will be carried live on NASA TV, and on the NASA TV website at:

Stanford University Event Coverage

For those of you here at Stanford, this event will be projected on a large screen from NASA TV streaming video via a laptop computer from 10:00 - 11:00am in Conference Rooms 102/103 of the Physics/Astrophysics building. See the Hansen Experimental Physics Lab (HEPL) webstie for more information:

Final Results to be Posted on this Web Page

Following the NASA press and media event next Wednesday, we will post a summary of the final results on this web page, including a link to a results summary paper recently accepted for publication in the journal Physical Review Letters.

As they say on the radio, stay tuned....

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