Magnetars are neutron stars with magnetic fields approximately 10^15 gauss (a quadrillion times Earth's), and when their crust cracks, the magnetic field reconnects and releases gamma-ray bursts that can compress Earth's ionosphere even from 50,000 light-years away, potentially stripping the ozone layer and causing catastrophic damage if such an event occurred within 10 light-years.
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Astronomy / Space / Astrophysics: How A Magnetar Could Fry Earth β‘π #shortsAdded:
A dead star in our galaxy could fry Earth tonight. Here's what would happen and how close it already came. A magnetar, a neutron star with a magnetic field a quadrillion times Earth's, the size of Manhattan. If one quakes close enough, our ozone strips, satellites die, power grid stop, [music] all in 0.2 seconds. In 2004, one quaked 50,000 light years away, it still compressed our atmosphere. It hit us once. Next time, we won't know before it does.
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