The Universe

The universe is a large place.

It contains lots of stuff.

Andromeda

Andromeda is our nearest large galaxy.

It is a spiral galaxy.

Milky Way

Our galaxy is called the Milky Way.

It is also a spiral galaxy.

Proxima Centauri

The nearest star is Proxima Centauri.

It is a relatively-small star.

The Sun

The Sun is our star, the center of our solar system.

Pluto

Earth

We live on planet Earth.

This planet is particularly nice.

Are we?

Physics of the Sun

The Sun is much larger than the Earth.

The Sun is much hotter than the Earth.