Galaxy A galaxy is any of the systems of stars and interstellar matter that make up the universe Many such assemblages are so enormous that they contain hundreds of billions of
Galaxy Basics Galaxies consist of stars planets and vast clouds of gas and dust all bound together by gravity The largest contain trillions of stars and can be more than a A galaxy is a concentration of millions or billions of stars gas clouds and pockets of dust all bound by gravity and swathed in a cocoon of mysterious dark matter
Galaxy
Galaxy
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In our own galaxy the Milky Way the sun is just one of about 100 to 400 billion stars that spin around Sagittarius A a supermassive black hole that contains as much mass as four million The Basics What Is a Galaxy Really At its core a galaxy is a massive gravitationally bound system consisting of stars stellar remnants interstellar gas dust and
A galaxy can contain hundreds of billions of stars and be many thousands of light years across Our own galaxy the Milky Way is around 100 000 light years in diameter What Is a Galaxy The Short Answer A galaxy is a huge collection of gas dust and billions of stars and their solar systems all held together by gravity We live on a planet
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The Milky Way or Milky Way Galaxy c is the galaxy that includes the Solar System with the name describing the galaxy s appearance from Earth a hazy band of light seen in the night sky Everything in a galaxy moves around a centre of mass which is also an effect of gravity There are various types of galaxies elliptical spiral and lenticular galaxies which can all be with or
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https://www.britannica.com › science › galaxy
A galaxy is any of the systems of stars and interstellar matter that make up the universe Many such assemblages are so enormous that they contain hundreds of billions of
https://science.nasa.gov › universe › galaxies
Galaxy Basics Galaxies consist of stars planets and vast clouds of gas and dust all bound together by gravity The largest contain trillions of stars and can be more than a
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Galaxy - A galaxy can contain hundreds of billions of stars and be many thousands of light years across Our own galaxy the Milky Way is around 100 000 light years in diameter