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 rotating disk of stars, gas, and dust, with spiral arms extending outward.

Front

What is an elliptical galaxy?

Back

A galaxy shaped like an ellipse, with a smooth, featureless light profile and older stars.

Front

What is an irregular galaxy?

Back

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

Front

Where is our solar system located in the Milky Way galaxy?

Back

In the spiral arm.

Front

What are galaxies primarily made of?

Back

Dust, gas, and stars.

Front

What is the significance of dark matter in galaxies?

Back

Dark matter is believed to make up a large part of the universe's mass and affects the gravitational forces within galaxies.

Front

What is the role of supermassive black holes in galaxies?

Back

They are found at the centers of most galaxies and influence the motion of stars and gas around them.

Front

How do galaxies form?

Back

Galaxies form from the gravitational collapse of gas and dark matter in the early universe.

Front

What is the Hubble's Law?

Back

It states that the farther away a galaxy is, the faster it is moving away from us, indicating that the universe is expanding.