Components of the universe
The universe consists of all the celestial bodies in the galaxies and intergalactic space.
Stars
Starts are giant spheres of gas that produce energy. This energy generates light and heat.
The Sun is much closer to Earth than any other star.
Constelations
Constellations are groups of stars that form patterns in the sky.
Galaxies
Galaxies are groups of billions of stars, planets, gas clouds and rock fragments.
The solar system belongs to a galaxy called the Milky Way.
