They are divided into degrees so that we can know the exact location :)
He got it at the cave Hira
10xY
10 . Y
10Y
There you go can i get a 5 star and brainlyist
Answer:
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A global network of observation stations measures the round trip time of flight of ultrashort pulses of light to satellites equipped with retroreflectors.
powerful source of data for studies of the solid Earth and its ocean and atmospheric systems