Italy's LARES spacecraft, launching today, will test an effect of general relati...

Italy's LARES spacecraft, launching today, will test an effect of general relativity with unprecedented accuracy, mission managers say.


European "Disco Ball" Probe to Test Einstein's Relativity
news.nationalgeographic.com
In the mid-2000s, after more than 40 years of development, the $800-million Stanford University-led Gravity Probe B detected frame dragging. This effect, predicted by Einstein's theory, is caused by Earth's rotation dragging the fabric of space and time along with it.

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