A comet which lights up the night sky each year with hundreds of fireballs could be hiding doomsday asteroids.
That is the finding of a team of researchers who have been investigating the annual Taurids meteor shower.
And they are warning that the cosmic fragments of ice and rock could be large enough to wipe out whole continents.
One of these fragments could hit Earth in 2022, 2025, 2032 or 2039, researchers predict.
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