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Yes. On cosmic timescales, comets hit Earth frequently, but
Amazing answers to your curious questions
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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YOUR QUESTIONS
Q How tall are the White Cliffs of Dover? ASome parts of the iconic cliff attraction in the very southern tip of England reach more than 300 feet high. Given that it is seen by many crossing the Chann
