The Universe

The stars are huge gas spheres that shine in the darkness of space. During clear nights we can see thousand of stars in the sky. All stars, along with the rest of the celestial bodies found in the sky are part of the Universe.

There are many different theories on how the universe started but the most known is the Big Bang theory, or in other words, the great explosion. This explosion occurred about 10 or 20 billion of years ago when absolutely nothing existed.