"Closing in on Einstein: Frame-Dragging Clearly Visible

The accuracy of the GP-B experimental results has improved seventeen-
fold since our preliminary results announcement at the American
Physical Society annual meeting in April 2007. At that time, only the
larger, geodetic effect was clearly visible in the data. Over the past
two and one half years, we have made extraordinary progress in
understanding, modeling and removing three Newtonian sources of error—
all due to patch potentials on the gyroscope rotor and housing
surfaces. The latest results, based upon treatment of 1) damped
polhode motion, 2) misalignment torques and 3) roll-polhode resonance
torques, now clearly show both frame-dragging and geodetic precession
in all four gyroscopes (see figure at top right)."

http://einstein.stanford.edu/highlights/status1.html

Double-A