Science Common Sense

1268 - What is the Milky Way galaxy mainly composed of

The Milky Way galaxy is mainly composed of three things:

1. About 200-400 billion stars (like our sun)
2. Lots of gas and dust that floats in space
3. Dark matter, which is a type of invisible matter that helps hold the galaxy together.

These three things make up most of our amazing Milky Way galaxy!