Mission Status
Our lastest data analysis indicates clear observation of frame-dragging. The statistical uncertainty is 14%
(~5 marcs/yr).
The 10% (~4 marcs/yr) gyro-to-gyro scatter gives a measure of the GP-B experiment systematic uncertainty.
For details on the data analysis progress and recent program activities,
see
our Mission Status Update...
Collaborators
GP-B Mission
GP-B was designed to measure two key predictions of Einstein's general theory of relativity by monitoring the orientations of ultra-sensitive gyroscopes relative to a distant guide star. Learn more about the mission.
Technology
Most of the technology required to bring GP-B to the launch pad did not exist when the experiment was conceived in 1959. Learn about the advances in engineering that made it all possible.
Einstein's Spacetime
How did Einstein revolutionize our concepts of space and time? Do they exist absolutely or relative to matter? And how does gravity fit in? Learn more about Einstein's universe.