Galaxies and the Universe

Front

What is the name of the galaxy that contains our solar system?

Back

The Milky Way.

Front

What cluster is the Milky Way galaxy a part of?

Back

The Local Group.

Front

Why can't we see the spiral shape of the Milky Way from Earth?

Back

Because we are located in one of its spiral arms.

Front

What force holds galaxies together?

Back

Gravity.

Front

How many main types of galaxies are there?

Back

Three.

Front

What is the estimated number of galaxies in the universe?

Back

Billions.

Front

What are the three main types of galaxies?

Back

Spiral, elliptical, and irregular.

Front

What is a spiral galaxy?

Back

A galaxy characterized by its spiral shape, with arms that wind outward from the center.

Front

What is an elliptical galaxy?

Back

A galaxy shaped like an elongated sphere, with no distinct features like spiral arms.

Front

What is an irregular galaxy?

Back

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