Stars how many are there

Or, to put it another way, sextillion. This article is republished from The Conversation under a Creative Commons license. Read the original article. Brian Jackson. Share How many stars are in the universe? The universe, galaxies, stars Yet astronomers like me have figured out how to estimate the total number of stars in the universe, which is everything that exists. Like people, galaxies are diverse. They come in different sizes and shapes.

Counting the galaxies Before calculating the number of stars in the universe, astronomers first have to estimate the number of galaxies. That number is then multiplied by the number of pictures needed to photograph the whole sky. The Sun is the closest star to our planet. With that method, they discovered the Milky Way has about billion stars — ,,, About , stars can be seen using a small telescope.

There are an estimated one hundred billion ,,, stars in our own Milky Way galaxy , although some estimates range up to four times that many, much depending on the number of brown dwarfs and other very dim stars. A typical galaxy may contain anywhere between about ten million and one trillion stars. Therefore, using a very rough estimate of a hundred billion galaxies in the observable universe , and the number of stars in our own galaxy as a reasonable average, there may be around ten billion trillion 10,,,,,,, or 10 22 stars in the observable universe , or quite possibly anywhere up to 10 How fast are we traveling through space??

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Groups Why Join? Astronomy Day. The Complete Star Atlas. Scientists have a good estimate on the staggering number of stars in the universe. Exactly how many stars are in space? Note the spiral arms. The universe, galaxies, stars Yet astronomers like me have figured out how to estimate the total number of stars in the universe, which is everything that exists.

Like people, galaxies are diverse.