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- Galaxy - Wikipedia
Galaxies, averaging an estimated 100 million stars, [3] range in size from dwarfs with less than a thousand stars, [4] to the largest galaxies known – supergiants with one hundred trillion stars, each orbiting its galaxy's centre of mass
- Galaxies - NASA Science
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 million light-years across The smallest can contain a few thousand stars and span just a few hundred light-years
- Galaxy | Definition, Formation, Types, Properties, Facts | Britannica
galaxy, 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 stars Nature has provided an immensely varied array of galaxies, ranging from faint, diffuse dwarf objects to brilliant spiral-shaped giants
- What is a Galaxy? - sciencenewstoday. org
Galaxies are the grand islands of the universe, each one a vast metropolis of stars, gas, dust, dark matter, and endless possibility From tiny dwarfs to sprawling giants, galaxies tell the story of the cosmos—its birth, evolution, and perhaps its ultimate fate
- UNIVERSE MAP
Universe Map is your definitive guide to galaxies, stars, and cosmic structures — mapped, analyzed, and optimized for discovery and research
- Galaxies—facts and information | National Geographic
Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held together by gravity Nearly all large galaxies are thought to also contain
- Types of Galaxies | Pictures, Facts, and Information
Explore the main types of galaxies: spiral, elliptical, barred and irregular with stunning astrophotography and insights into how galaxies form, collide evolve
- Types - NASA Science
Our Milky Way is one example of a broad class of galaxies defined by the presence of spiral arms These galaxies resemble giant rotating pinwheels with a pancake-like disk of stars and a central bulge or tight concentration of stars
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