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.