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‘First comet material found on earth’

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A comet exploded over modern-day Egypt 28 million years ago, raining down fire and leaving behind a “mysterious” black pebble — the first-ever comet material found on Earth, scientists have said. “Comets always visit our skies — they’re these dirty snowballs of ice mixed with dust — but never before in history has material from a comet ever been found on Earth,” said professor David Block at South Africa’s University of the Witwatersrand. Egyptian pharaoh Tutankhamun had a scarab broach made from yellow silica glass created when the comet’s explosion heated sand to 2,000 degrees Celsius (3,600 degrees Fahrenheit). But also left behind was the first comet material discovered on Earth — a black pebble embedded in the modern-day Sahara’s sands. — AFP


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