The Universe, Our Milky Way, Our Solar System.

Now that we know about each of our Solar Systems planets we will learn a few about the Universe. As we all know we live on a ball of rock called Earth in a vast expanse called Space. Besides Earth, there are other planets, billions of stars, and other pieces of rock and dust in space. The name for all this we have learned is what is known to be called The Universe. No astronaut nor scientist knows exactly where the Universe begins or ends. So in other terms we can think of the Universe as a place that goes on forever! Naturally the question of where all of this started is expected, well most scientist think that the Universe was created billions of years ago by a massive explosion called The Big Bang. After the enormous explosion that created the entire Universe, billions of years passed and galaxies started forming. Like the Milky Way Galaxy, which is where our Solar system is located.

(Credits of Pictures: NASA, google.)