Rock & Gem

Observing Earth from Space Just Got Harder


A recent issue of the journal Science reports that a pair of satellites dubbed Sentinel 1-A and Sentinel 1-B maintained by the European Space Agency has been mapping the Earth’s surface via radar to note displaceme­nts caused by such geological activities as volcanoes and earthquake­s and melting ice. But Sentinel 1-B recently went dark.

Never fear. Sentinel 1-C has been in the wings for some time, with a projected launch date of mid-2023. Še loss of Sentinel 1-B may well accelerate this launch date to once again open our eyes on Earth from above.

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