Monday, 1 June 2009

How many earths fit in the observable universe?

Without checking the numbers in detail, according to Wikipedia, the volume of the observable universe is about 3.5cdot1080mboxm3, and the volume of Earth is about
1.08321cdot1021mboxm3.



By dividing the two volumes we get a factor of 3.2cdot1059, or written as decimal number: The observable comoving volume of the universe is about
320,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000-times the volume of Earth.

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