Space
‘Black glass’ could be first comet chunk found on Earth
Chemical clues hint that the strange stone found in the Egyptian desert comes from a comet that exploded near Earth 28 million years ago
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Chemical clues hint that the strange stone found in the Egyptian desert comes from a comet that exploded near Earth 28 million years ago
For 400 years sunspot numbers have told us what the sun is up to. But wrinkles in the record have left solar scientists scratching their heads, until now