Mission Status
The latest data analysis indicates observation of Frame-Dragging. This analysis includes a model of the "roll-polhode resonance torque" and it yields a statistical uncertainty of 15%. This 15% uncertainty does not include all systematic effects.
These latest interim GP-B results are detailed in our Final Science Report to NASA (Quick Link at right).
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.