CAPE CANAVERAL, Florida (Reuters) -- Forty-five years in the making and 24 hours late, NASA launched a $700 million satellite into orbit on Tuesday to
test Albert Einstein's general theory of relativity.
The Gravity Probe B, one of the most precise scientific instruments every built, was carried aloft by a Boeing Co. Delta 2 at 12:57 p.m. EDT from the
rocket range at California's Vandenberg Air Force Base.
Housed in a thermos filled with liquid helium, the four ping pong shaped gyroscopes will be spun up to 10,000 revolutions per minute (RPM), then
monitor how that spin direction is affected by Einstein's predicted principles
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