Galaxies Review

Front

What is a galaxy?

Back

A huge system of millions or billions of stars, together with gas and dust, held together by gravity.

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What are the main types of galaxies?

Back

Spiral, Elliptical, and Irregular.

Front

What type of galaxy has a flat, disk shape with winding arms?

Back

Spiral galaxy.

Front

Which galaxy is Earth located in?

Back

Milky Way.

Front

What is an Optical Galaxy?

Back

Not a recognized type of galaxy; it is a term that does not refer to a specific galaxy type.

Front

What characterizes an Elliptical Galaxy?

Back

An elliptical galaxy has an oval shape and lacks the distinct arms of spiral galaxies.

Front

What is an Irregular Galaxy?

Back

A galaxy that does not have a distinct regular shape, often chaotic in appearance.

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

Back

A galaxy is a massive system containing millions or billions of stars, while a solar system consists of a star and the celestial bodies that orbit it.

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What is a nebula?

Back

A nebula is a giant cloud of gas and dust in space, often the birthplace of stars.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.