What is the approximate ratio of stars visible in the night sky to stars in the universe?

Gnomon

Zero There are about 5000 stars visible in the night sky. There are about 100 billion stars in the galaxy and more than that number of galaxies in the universe, so the number of stars in the universe is vast compared with the number of stars we can see with our eyes. Feb 17 04, 7:15 AM

guiscard

Add phrase "to the naked eye". Answer: approximately 0:1 Feb 17 04, 7:25 PM

sequoianoir

Perhaps slightly more accurately than 0:1 The current estimation is that there are about 10 billion (10^10) stars in an average galaxy, and there are about 10 billion galaxies. This makes 100 billion billion or 10^20. Given we can see 5000 with the naked eye, this gives a ratio of 5,000:100,000,000,000,000,000,000 or 1:20,000,000,000,000,000 Feb 18 04, 6:58 AM

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