Europe to launch satellites for Earth, Einstein
April 22, 2016  03:32
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Europe is set to launch two satellites tomorrow with very important missions: one will track environmental damage to Earth, while the other will test a mainstay of physics theory.
Setting off on a Russian Soyuz rocket will be Sentinel-1B with its Earth surveillance radar, and Microscope, a French-built orbiter seeking to poke a hole in Einstein's theory of general relativity.
They will be hoisted from Europe's launch pad in Kourou, French Guiana, at 2102 GMT Friday.

Sentinel-1B is the twin of Sentinel-1A, launched two years ago.
The pair are equipped with sophisticated, cloud-penetrating radar with which to monitor Earth's surface by day and night, regardless of the weather conditions.

Their mission is to track climate and environmental change and assist in disaster relief operations.
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