- Galaxy - Wikipedia
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity [1][2] The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System
- Galaxy | Definition, Formation, Types, Properties, Facts | Britannica
What is a 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 stars Galaxies usually exist in clusters, some of which measure hundreds of millions of light-years across
- Galaxie — Wikipédia
Cette hypothèse d'évolution a depuis été totalement invalidée, mais la dénomination en termes de « galaxie précoce » (early-type galaxy en anglais) pour les elliptiques et « galaxie tardive » (late-type galaxy) pour les spirales est par contre, toujours usitée
- LA Galaxy
LA Galaxy Announce 2026 Regular Season Schedule and Special Events in Honor of Global Soccer in Los Angeles
- Galaxies - NASA Science
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 million light-years across The smallest can contain a few thousand stars and span just a few hundred light-years
- Galaxy Formation and Evolution - Harvard–Smithsonian Center for . . .
Our Work Center for Astrophysics | Harvard Smithsonian scientists study galaxy formation and evolution in a variety ways: Looking for hidden structures and unusual stars that reveal the Milky Way’s history
- Galaxies—facts and information | National Geographic
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 suns
- What’s a galaxy? All you need to know - EarthSky
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
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