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We Are Not Doomed - Reasons to be Cheerfulreasonstobecheerful.world

In 1973, the U.S. Department of Defense started the global positioning system project to enable worldwide geolocation with pinpoint accuracy. The first GPS prototype spacecraft launched in 1978, and the full original constellation of 24 satellites became operational in 1993. At first, just the U.S. military used GPS, but by...

Created 1/12/2020