Question

What is the length of the universe

Answer 1

To convert this density to mass we must multiply by volume, a value based on the radius of the "observable universe". Since the universe has been expanding for 13.8 billion years, the comoving distance (radius) is now about 46.6 billion light-years.

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Answer 2

The length of Universe in Diameter is

8.8×1026 m (28.5 Gpc or 93 Gly)

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