Types of Galaxies

Front

What are the three main types of galaxies?

Back

Spiral, Elliptical, Irregular.

Front

What is a Spiral Galaxy?

Back

A galaxy characterized by a flat, rotating disk containing stars, gas, and dust, and a central concentration of stars known as the bulge.

Front

What is an Elliptical Galaxy?

Back

A type of galaxy that is ellipsoidal in shape and lacks the distinct features of spiral galaxies, often containing older stars.

Front

What is an Irregular Galaxy?

Back

A galaxy that does not have a distinct regular shape, often chaotic in appearance, and typically contains young stars.

Front

What is the main force that holds galaxies together?

Back

Gravity.

Front

What is the difference between a Spiral Galaxy and an Elliptical Galaxy?

Back

Spiral galaxies have a flat, rotating disk with arms, while elliptical galaxies are more rounded and lack the structure of spiral arms.

Front

Can a galaxy be both Spiral and Irregular?

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No, a galaxy is classified as one type based on its shape and structure.

Front

What is the Milky Way?

Back

The Milky Way is a barred spiral galaxy that contains our solar system.

Front

What is a barred spiral galaxy?

Back

A type of spiral galaxy that has a central bar-shaped structure composed of stars.

Front

What are the characteristics of an Irregular Galaxy?

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Irregular galaxies have no defined shape, often contain young stars, and can be rich in gas and dust.