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Why was the Space Shuttle
From strange lights in the sky to rocks that spontaneously glide across the ground, the mysteries scientists are trying to finally crack
From colliding galaxies to supermassive black holes, we take a look at some of the strangest sights in the universe
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Many people associate clans with Scotland, but the word originated in Ireland in the early Middle Ages. It derives from the Irish clann, meaning children, and is used to describe a highly organised hi