Mission Status
Welcome to our new Web site! Whatever your level of knowledge about physics and relativity, we hope you find our new site easy to navigate and interesting to browse through.
The data analysis phase of GP-B has been extended through September 2008, and possibly longer, and our science team is continuing to improve both the precision and accuracy of the results.
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.