Galaxies

A group of millions of stars, gas, and dust held together by gravity.

• Universe

• Galaxy

• Astronomer

• Irregular Galaxy

A flat, disk-shaped galaxy with a central bulge and "arms" that extend outward.

• Galaxy

• Telescope

• Spiral Galaxy

• Milky Way Galaxy

The most abundant type of galaxy that has a smooth, circular (or oval) shape.

• Spiral Galaxy

• Milky Way Galaxy

• Irregular Galaxy

• Elliptical Galaxy

A random, scattered type of galaxy that does not form a distinct shape or pattern.

• Irregular Galaxy

• Telescope

• Spiral Galaxy

• Universe

The galaxy in which we live is:

• Star

• Elliptical Galaxy

• Milky Way Galaxy

• Astronomer

A huge, burning sphere of gases held together by gravity.

• Astronomer

• Star

• Universe

• Galaxy

All of space and everything in it.

• Galaxy

• Star

• Astronomer

• Universe

A scientist that studies stars, planets, and other objects in space.

• Astronomer

• Star

• Galaxy

• Telescope

An instrument used to observe distant objects in space.

• Star

• Galaxy

• Telescope

• Astronomer

How many stars are in our solar system?

• 1 billion

• 1 million

• 1

• 10 billion