Galaxies

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter, bound together by gravity.

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What are the main types of galaxies?

Back

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

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What is the Milky Way?

Back

The Milky Way is the galaxy that contains our Solar System, and it is a barred spiral galaxy.

Front

How many galaxies are estimated to be in the universe?

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There are estimated to be over 2 trillion galaxies in the observable universe.

Front

What is the largest galaxy in the Local Group?

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The largest galaxy in the Local Group is the Andromeda Galaxy.

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What is a spiral galaxy?

Back

A spiral galaxy is a type of galaxy characterized by its spiral arms that wind outward from the center.

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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 features of spiral galaxies.

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What is an irregular galaxy?

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An irregular galaxy is a galaxy that does not have a distinct regular shape, often appearing chaotic.

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What is the difference between a solar system and a galaxy?

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A solar system is a collection of celestial bodies, including a star and its planets, while a galaxy is a vast collection of stars, solar systems, and other matter.

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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.