Galaxies

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, star clusters, planetary systems, gas, dust, and dark matter, all bound together by gravity.

Front

What are the three main types of galaxies?

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The three main types of galaxies are Spiral, Elliptical, and Irregular.

Front

What is a Spiral galaxy?

Back

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 has an oval shape and lacks the distinct arms found in spiral galaxies. They are mostly made up of older stars.

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What is an Irregular galaxy?

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An Irregular galaxy does not have a defined shape or structure, often appearing chaotic and containing young stars.

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What type of galaxy is the Milky Way?

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The Milky Way is a Spiral galaxy.

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Where is the solar system located?

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The solar system is located in the Orion Arm of the Milky Way galaxy.

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What is the center of a galaxy typically composed of?

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The center of a galaxy is typically composed of a supermassive black hole surrounded by stars and gas.

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What is dark matter?

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Dark matter is a form of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.

Front

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 formation and evolution.