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1 The Universe is 13.82 billion years old. 2  The Universe is expanding a bit slower than we expected. 3  The Universe is 4.9 percent normal matter, 26.8 percent dark matter, and 68.3 percent dark energy.  The Universe is lopsided. Just a bit, just a hint, but that has profound implications.
Thus, the part of the Universe we can observe (the Visible Universe) lies within a sphere with a radius of 13.7 billion light years centered around the Earth. 1  We can only observe 13.7 billion light years of the Universe. 2  We are only able to see the parts of the Universe whose light has had time to reach us.