Galaxies - NASA Science

Overview 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. Most large galaxies have supermassive black holes […]

Galaxy - Wikipedia

Webb Telescope Spots a Distant Spiral Galaxy Like Our Own - The New York Times

Types Galaxies – NASA Universe Exploration

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Evolution Galaxies – NASA Universe Exploration

Galaxies - NASA Science

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