8 months ago
Last edited at 2:24PM on 8/16/2013
There are around 6,000 stars visible to the unaided eye on a clear night.
If you wanted to know how many stars are in the universe... let's just say, there are more stars than grains of sand on Earth. A conservative estimate suggests 100 billion galaxies * 100 billion stars per galaxy = 10,000,000,000,000,000,000,000 (10 sextillion) stars.
If the theory that the universe is "infinite" is true then there are an infinite number of stars. One theory also states that if you keep going in one direction eventually you will just turn up right where you started. If this is true then there is a limit to how many stars there are. But I don't think anyone will ever know exactly.