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Number of Stars in the Universe

How many stars are there in the universe?

9 sextillion.

The number of stars in the observable universe is estimated to be 9 x 1021 or 9 billion trillion or 9 sextillion. This estimate is derived from the volume of the observable universe and stellar density that is calculated based on observations from the Hubble Space Telescope.

This fact is verified on : February 3, 2010.





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