Gravity Probe-B: Precise Gyroscopes Ready to Test Einstein Theory

SpaceRef is carrying a report on NASA's scheduled launch of Gravity Probe-B on April 17.

The two effects being tested are: The geodetic effect, the amount by which the Earth warps local spacetime in which it resides, and the frame-dragging effect, the amount by which the Earth drags local spacetime around with it as it rotates.

The launch from Vandenberg will be broadcast live on NASA Television on the AMC-9 satellite, transponder 9C, located at 85 degrees West longitude, vertical polarization, frequency 3880.megahertz, audio 6.8 megahertz.

Yahoo is also carrying the story.