Cosmological principle

The cosmological principle is an idea about the way the universe looks. It states that if we were to look out into space from any point, it would look the same as it does from any other point. To try and imagine this, think of an endless sea of balls, all bouncing off each other. If you were to look at any two balls from any point, they would look the same. The same is true for the universe - no matter where you look, it will look the same.