space after its magnetic field collapsed, could happen again.The phenomenon happened 42,000 years ago when the planet’s magnetic poles flipped.It caused the magnetic field – which protects Earth from deadly particles emitted by the sun – to dramatically weaken.Researchers from the University of New South Wales say it caused lightning storms, "crimson skies" and extreme UV radiation, while the ozone layer was destroyed.The disaster sparked major climate shifts that led to mass extinctions, according to the scientists.They are now concerned there could be an upcoming reversal of the poles.Professor Christopher Fogwill, from Keele University who was a coauthor on the study, said: “We suspect there is something on the way.
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