Galaxies and the Universe

Front

A galaxy which has a nucleus of bright stars and two or more arms in circular formation is called a ___ galaxy.

Back

Spiral

Front

What type of galaxy is characterized by a smooth, featureless shape and is often round or oval?

Back

Elliptical

Front

What type of galaxy does not have a regular shape and can appear chaotic?

Back

Irregular

Front

What is dark matter?

Back

Matter that emits no light at any wavelength.

Front

What unit is used to measure distances in space?

Back

Light year

Front

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

Back

Milky Way Galaxy

Front

What are the two main types of galaxies?

Back

Spiral and Elliptical.

Front

What is a quasar?

Back

A highly luminous object powered by a supermassive black hole at the center of a distant galaxy.

Front

What is the difference between a spiral galaxy and an elliptical galaxy?

Back

Spiral galaxies have arms and a bright nucleus, while elliptical galaxies are smooth and featureless.

Front

What is the observable universe?

Back

The part of the universe that we can see and measure, limited by the speed of light.