Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!
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Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements. Every star has its own life cycle, ranging from a ...
Main sequence stars make up around 90% of the universe's stellar population. They range in luminosity, color, and size – from a tenth to 200 times the Sun's ...
Sep 26, 2022 · Stars are giant, luminous spheres of plasma. There are billions of them — including our own sun — in the Milky Way galaxy. And there are ...
The observable universe contains an estimated 1022 to 1024 stars. Only about 4,000 of these stars are visible to the naked eye—all within the Milky Way galaxy.
Feb 11, 2022 · 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 ...
A multitude of stars packed together in a dense region of space, shining brightly in Story ...
Mar 20, 2019 · They are the building blocks of galaxies, of which there are billions in the universe. It's impossible to know how many stars exist, but ...
Feb 7, 2024 · Stars are born in clouds of gas and dust. One such stellar nursery is the Orion Nebula, an enormous cloud of gas and dust many light-years ...