Bang! Scientists think the universe started with the Big Bang, an explosion that created the universe about 13.7 billion years ago. The universe is still expanding. It's spreading out faster as it ages. It is everything that's anywhere! Where do you live in it? And what else is out there? This book is out of this world with facts that represent the large space that is our universe. This book will allow students to understand that patterns in the natural world can be observed, used to describe phenomena, and used as evidence.