Total number of stars in the universe

Though there have no clear data about the question answer. It can assume, there are about 10 billion galaxies in the observable universe! The number of stars in a galaxy varies, but assuming an average of 100 billion stars per galaxy means that there are about 1,000,000,000,000,000,000,000 (that's 1 billion trillion) stars in the observable universe!

Stars are very beautiful in the sky. They glitters in the sky all time. But we can notice it only night. The size of this stars are very big. They are bigger than world.

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