Answer:Many people ask about the shape and the size of the Universe. The conception of the size of the Universe –if it is infinite or not- is very old. For instance, in Antiquity people and philosophers thought of the Universe as a closed Universe, finite, but with a border. Now we know that it is nonsense to consider that the Universe can have a real frontier. So the tendency is to believe that the Universe is infinite, but in fact the interesting point is that new geometries built in the XIX century –called non-Euclidian geometry- and also what we call topology –which is a branch of geometry that tries to understand the global shape of space- propose a coherent mathematical
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