Mission NEWS 2015
GP-B CQG Special Volume Published November 2015
The GP-B Special Volume, detailing the science, the technologies, and the data analysis of this landmark test of Einstein's general theory of relativity, has been published in
Classical and Quantum Gravity.
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.