How Many Stars Are There in the Universe?
No one knows how many stars there are in the universe. We cannot see all the stars, much less count them. It is estimated that there are about 100 billion stars in our Milky Way Galaxy. There are about one billion other galaxies in the universe.
Some are smaller than the Milky Way Galaxy, and some are much bigger. But if you use the number of stars in the Milky Way Galaxy and multiply it by the number of galaxies in the universe, you can get a rough idea of the number of stars in the sky.
One hundred billion times one billion equals one hundred billion billion! Even using our most advanced telescopes and technology, we still cannot see to the ends of our universe.
Further complicating things, closer stars that are particularly bright also block our ability to see beyond them in certain directions.
Recently, though, some scientists challenged some of the assumptions we have been using for years. Scientists now believe there may be three times more stars than scientists previously estimated.
They believe there may be many more red dwarf stars — the most common type of star in the universe — than previously thought. Based on the latest estimates, astronomers estimate our universe could be the home to 300 sextillion stars.
As technology improves and we get even better glimpses at the far corners of the universe, we may eventually find that the number of stars is even greater than anyone could ever imagine! In truth, there are too many to count, provided estimates are just guesses.