Sensors buried deep within the Antarctic ice to pick up distant cosmic events might show up something even more exciting. They could finally prove whether extra dimensions really exist and help particle physicists validate superstring theory. Extra dimensions are central to superstring theory - physicists' most promising "theory of everything". By uniting the properties of electromagnetism, gravity and the forces within atomic nuclei, this theory tries to explain how everything in the Universe behaves. It predicts six extra dimensions in space on top of the familiar three dimensions in space and one in time.
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