Have you ever thought about the shape of the Universe? Guess, we all know the answer, but the new study hints otherwise. As we know our theory of the universe has been evolving over the years. Albert Einstein’s theory of general relativity allows the universe to have one of three shapes: flat, closed, or open. But this can’t change the fact that the Universe is continuously expanding. Just like a rubber ballon that remains flat while stretched. As the shape of space is affected by the presence of mass, therefore it depends upon the average density of matter within it.