Earth’s magnetic poles could start to flip. What happens then?

Friday, December 7, 2018 - 07:00 in Astronomy & Space

by Jonathan O’Callaghan As Earth’s magnetic shield fails, so do its satellites. First, our communications satellites in the highest orbits go down. Next, astronauts in low-Earth orbit can no longer phone home. And finally, cosmic rays start to bombard every human on Earth. This is a possibility that we may start to face not in […]

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