Galaxies and the Universe

Front

About _____% of the universe's mass is dark matter.

Back

90%

Front

A galaxy that has a shape similar to a football is a(n) __________ galaxy.

Back

elliptical galaxy

Front

There are _________ of galaxies in our universe.

Back

billions

Front

There are _____ types of galaxies.

Back

3 types: spiral, elliptical, and irregular.

Front

Which best describes the location of our solar system?

Back

In a galaxy called the Milky Way, which is part of a cluster called the Local Group.

Front

What is a galaxy?

Back

A large system of stars, gas, dust, and dark matter bound together by gravity.

Front

What are the three main types of galaxies?

Back

Spiral, elliptical, and irregular.

Front

What is dark matter?

Back

A type of matter that does not emit light or energy, making it invisible and detectable only through its gravitational effects.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.

Front

What is the Local Group?

Back

A collection of over 54 galaxies, including the Milky Way.