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An enormous 'X' and 'V' will grace the moon's surface tonight. Here's how to see themAt this time, the sun shines at such an angle to make it appear as if there is a gigantic 'V' and 'X' marking the barren ...
Some 252 million years ago, almost all life on Earth disappeared.Known as the Permian–Triassic mass extinction – or the Great ...
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