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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.
However the size of observable universe is about: 46 Billion Light Years which is about... 2.70410991 Ã 10^23 miles (I can't even pronounce it without using mathematical terms) nor i can phantom how big that is. note: one light year is the distance a light could travel within one year.