How many stars are there in the universe?

Some astronomers also think that we may live in a "multiverse" where there would be other universes like ours contained in some sort of larger entity. The simplest answer may be to estimate the number of stars in a typical galaxy, and then multiply that by the estimated number of galaxies in the universe. read more

In October 2016, an article in Science (based on deep-field images from the Hubble Space Telescope) suggested that there are about 2 trillion galaxies in the observable universe, or about 10 times more galaxies than previously suggested. read more

Editor's Note: This story was updated to correct the scientific notation for the number of stars in the galaxy. 100 million is 10 to the eighth power, not 10 to the seventh power. The total number of stars in the universe is therefore 10 to the 20th power, not 10 to the 19th power. Original article on Live Science. read more

And so, if you multiply the number of stars in our galaxy by the number of galaxies in the Universe, you get approximately 10 24 stars. That’s a 1 followed by twenty-four zeros. That’s a septillion stars. But there could be more than that. read more