When NASA's Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission launches on May 19, it will be able to map the Earth's gravitational field with unprecedented accuracy. Thanks to a new ...
Test rack: a GRACE-FO spacecraft being tested in Germany prior to launch. (Courtesy: Airbus DS GmbH/A Ruttloff) A laser ranging interferometer (LRI) has been used to measure changes as small as 200 pm ...
NASA has powered on the laser ranging interferometer or LRI instrument aboard the recently launched twin climate-monitoring satellites Gravity Recovery and Climate Experiment Follow-On or GRACE-FO.
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