THE UNIVERSE IS EVERYTHING EVERYTHING IN SPACE IN THE DARK For each thing we can see there are 19 we can’t see 1 T HING 17 DARK M AT T ER 2 DARK ENERGY 5 THE BIG The universe was small It was smaller than the head of a pin Then everything exploded 6 BIG BANG The explosion is called the Big Bang Suddenly the universe was bigger than a galaxy It took one second