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2. en.wikipedia.org › wiki › GalaxyGalaxy - Wikipedia

   en.wikipedia.org › wiki › Galaxy

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   Galaxy. NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light-years in diameter and approximately 60 million light-years from Earth. A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

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4. www.nationalgeographic.com › science › articleGalaxies—facts and information - National Geographic

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   Apr 17, 2019 · Learn about the types, origins, and features of galaxies, the sprawling systems of stars and dark matter held together by gravity. Find out how galaxies evolve, interact, and form in the cosmic web of the universe.

   • Video Duration: 45 sec

   • Author: Michael Greshko

5. www.space.com › 15680-galaxiesGalaxies: Collisions, Types and How They're Made | Space

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   Jan 4, 2019 · Galaxies are composed of stars, dust and dark matter, all held together by gravity. Astronomers aren't certain exactly how galaxies formed. After the Big Bang, space was made up almost entirely of ...

   • Video Duration: 1 min

   • Author: Nola Taylor Tillman

6. Videos

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     Our Universe Has Trillions of Galaxies, Hubble Study

     Oct 13, 2016

     3.4M Views

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     space.com

     What Is a Galaxy?

     Jan 4, 2019

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     12:06

     youtube.com

     Galaxies, part 1: Crash Course Astronomy #38

     Oct 29, 2015

     1.5M Views

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7. jwst.nasa.gov › content › scienceGalaxies Over Time - NASA JWST - Webb Space Telescope

   jwst.nasa.gov › content › science

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   Learn how galaxies form, evolve and interact over billions of years with the help of the James Webb Space Telescope. Explore images, videos and key concepts of galaxy types, shapes, black holes and dark matter.

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8. www.livescience.com › galaxyWhat is a galaxy? | Live Science

   www.livescience.com › galaxy

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   Aug 25, 2021 · Galaxies take on many different shapes and forms throughout the cosmos. Galaxies are groups of stars and other space objects held together by gravity. There are more than 100 billion galaxies in ...

9. www.youtube.com › watchGalaxies, part 1: Crash Course Astronomy #38 - YouTube

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   The Milky Way is our neighborhood in the universe. It’s a galaxy and there are many others out there. Galaxies contain gas, dust, and billions of stars or mo...

   • Video Duration: 12 min
   • Views: 1.5M

   • Author: CrashCourse

10. People also ask

    What is a ring Galaxie?

    • Peculiar galaxies are galactic formations that develop unusual properties due to tidal interactions with other galaxies. A ring galaxy has a ring-like structure of stars and interstellar medium surrounding a bare core. A ring galaxy is thought to occur when a smaller galaxy passes through the core of a spiral galaxy.

    Galaxy - Wikipedia

    en.wikipedia.org/wiki/Galaxy

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    What is a galaxy based on?

    • A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek galaxias ( γαλαξίας ), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System.

    Galaxy - Wikipedia

    en.wikipedia.org/wiki/Galaxy

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    What is a dark galaxy?

    • A dark or "ultra diffuse" galaxy is an extremely-low-luminosity galaxy. It may be the same size as the Milky Way, but have a visible star count only one percent of the Milky Way's. Multiple mechanisms for producing this type of galaxy have been proposed, and it is possible that different dark galaxies formed by different means.

    Galaxy - Wikipedia

    en.wikipedia.org/wiki/Galaxy

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    Are galaxies still forming and assembling today?

    • One thing we do know is that galaxies are still forming and assembling today. There are many, many examples of galaxies colliding and merging to form new galaxies. And in our own local neighborhood of space, the Andromeda galaxy is headed toward the Milky Way for a likely future collision many billions of years from now!

    Galaxies Over Time - NASA JWST - Webb Space Telescope

    jwst.nasa.gov/content/science/galaxies.html

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11. www.space.com › james-webb-space-telescope-spiralJames Webb Space Telescope observes 19 intricate galaxy ...

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    Jan 29, 2024 · The James Webb Space Telescope has observed the glowing gas and dust patterns of 19 spiral galaxies in stunning detail, aiming to uncover the origins of these intricate structures.