It took 44 years to build, and it’s designed to resolve one of the most intriguing questions in science: whether Einstein was right about the universe. Now circling Earth, Gravity Probe B is regarded ...

On April 20, a NASA rocket will lift off from Vandenburg Air Force Base carrying one of the most remarkable physics experiments ever attempted. Gravity Probe B will try to answer questions raised by ...

Is Einstein’s general theory of relativity correct? Testing two extraordinary predictions of that theory is the goal of Gravity Probe B, or GP-B, a satellite that just marked its first anniversary in ...

NASA researchers spent nearly 40 years on Gravity Probe B, a satellite designed to test some of Albert Einstein's theories. As the $700 million project winds down, NASA is rejecting a request for ...

A NASA probe orbiting Earth has confirmed two key predictions of Albert Einstein's general theory of relativity, which describes how gravity causes masses to warp space-time around them. The Gravity ...

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At 9:57:24 am Pacific Daylight Time on Tuesday, April 20, 2004, the Gravity Probe B spacecraft had a picture-perfect launch from Vandenberg Air Force Base in South-central California. The Boeing Delta ...

NASA's Gravity Probe B (GP-B) spacecraft has completed its initialization and orbit calibration phase and entered the science phase, the aerospace agency said last week. "This is the moment we have ...

NASA’s Gravity Probe B spacecraft was launched aboard a Boeing Delta II rocket at 12:57 p.m. EDT today. According to a previous NASA press release: “The launch had been scrubbed for 24 hours after a ...

SUNNYVALE, Calif., April 20, 2004 — NASA’s Gravity Probe B (GP-B) space vehicle, built, integrated and tested by Lockheed Martin (NYSE:LMT), roared into space this morning from Vandenberg Air Force ...

Decades in the making, a space probe that delves into Albert Einstein's general theory of gravitation remains grounded on Earth, caught in its own space-time continuum of technical snags, costly ...

A brief overview of polhode motion in the gyro rotors The gyroscope’s polhode motion is akin to the common “wobble” seen on a poorly thrown (American) football, though it shows up in a much different ...