Is the Universe Fractal?

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Science  16 Apr 1999:
Vol. 284, Issue 5413, pp. 445-446
DOI: 10.1126/science.284.5413.445

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One of the key issues in cosmology is the question of whether the universe is smooth or fractal at large dimensions. The answer has a bearing on the big bang model of the origin of the universe. Martínez discusses why recent analyses have come to opposing conclusions regarding this question and looks at how good a case can be made for large-scale smoothness of the universe.