Galaxies

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What is the Milky Way?

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The Milky Way is the galaxy that contains our solar system, along with millions of other stars, arranged in a spiraling pattern.

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What are the three main types of galaxies?

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The three main types of galaxies are: 1. Spiral, 2. Elliptical, 3. Irregular.

Front

What characterizes a spiral galaxy?

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A spiral galaxy is characterized by its spiral arms that wind outwards from the center, containing stars, gas, and dust.

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What is an elliptical galaxy?

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An elliptical galaxy is a type of galaxy that has an ellipsoidal shape and lacks the distinct arms of spiral galaxies.

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What defines an irregular galaxy?

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An irregular galaxy does not have a distinct shape or structure, often appearing chaotic and lacking symmetry.

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What is the closest galaxy to the Milky Way?

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The closest galaxy to the Milky Way is the Andromeda Galaxy.

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How do galaxies form?

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Galaxies form from the gravitational attraction of gas and dust in space, which clump together to create stars and other celestial bodies.

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What is the significance of the Hubble Space Telescope in studying galaxies?

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The Hubble Space Telescope has provided detailed images and data about galaxies, helping astronomers understand their structure, formation, and evolution.

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What is a galaxy cluster?

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A galaxy cluster is a group of galaxies that are held together by gravity, often containing hundreds or thousands of galaxies.

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What is dark matter and its role in galaxies?

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Dark matter is a form of matter that does not emit light or energy, and it is believed to make up a significant portion of the mass in galaxies, influencing their formation and behavior.