![]() ![]() But try this: It’s about 10 times the number of cups of water in all the oceans of Earth. The number is so big, it’s hard to imagine. Or, to put it another way, 200 sextillion. There are approximately 200 billion trillion stars in the universe. The answer is an absolutely astounding number. Using the Milky Way as our model, we can multiply the number of stars in a typical galaxy (100 billion) by the number of galaxies in the universe (2 trillion). With that method, they discovered the Milky Way has about 100 billion stars – 100,000,000,000. By measuring that starlight – specifically, its color and brightness – astronomers can estimate how many stars our galaxy holds. Red, white and blue stars give off different amounts of light. Exoplanet is the name for worlds outside our solar system. About two-thirds of the stars in the Milky Way are red dwarfs. Artist’s concept of a red dwarf star with an exoplanet in orbit. ![]()
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