Galaxy - Wikipedia
A galaxy is a system of stars and other celestial objects bound by gravity. Learn about the different types of galaxies, how they are named and catalogued, and how they were …
Galaxy | Definition, Formation, Types, Properties, & Facts | Britannica
2 天之前 · Learn about galaxies, the systems of stars and interstellar matter that make up the universe, from Britannica. Explore their formation, classification, properties, and evolution, as …
Galaxies - NASA Science
Learn about galaxies, the large collections of stars, planets, and gas and dust that form the universe. Find out about the types, shapes, ages, and features of galaxies, and how they are …
What Is a Galaxy? | NASA Space Place – NASA Science for Kids
2024年11月8日 · 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 called Earth that is part of our solar …
Galaxy Theatres Carson City | Movie Theatre
Galaxy Theatres is a fully integrated movie theatre company with theatres in California, Nevada, Texas, Arizona and Washington. See what is playing at a Galaxy Theatre near you!
Galaxies - HubbleSite
2024年10月28日 · Learn about the three main types of galaxies: elliptical, spiral and irregular, and how they differ in shape, size and star formation. Discover the evidence for dark matter and …
Galaxy Formation and Evolution - Center for Astrophysics
Learn how galaxies form and evolve over time, and how they are shaped by black holes, mergers, and gravitational lensing. Explore the research topics and projects of Center for Astrophysics …
Hubble's Galaxies - NASA Science
Galaxies are the visible foundation of the universe; each one a collection of stars, planets, gas, dust, and dark matter held together by gravity. Hubble’s observations give us insight into how …
Galaxy Types - Science@NASA
Learn about the different types of galaxies based on their shapes, features, and activity. See images and explanations of spiral, elliptical, lenticular, irregular, active, Seyfert, quasar, and …
What is a galaxy? - Live Science
2021年8月25日 · A galaxy is a group of stars and other space objects held together by gravity. Learn about the different types of galaxies, such as spiral, elliptical and dwarf, and how they …
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