Have you ever looked up at the sky at night and wondered just how far away the stars are? Or what astronomers mean when they talk about intergalactic space? Or megaparsecs? Or just how big the universe is, and how to grasp the incredible distances and vast corridors of time that describe it? This little book will describe for you, on a human scale, how anyone can comprehend the seemingly vast universe-by bringing it down to a human scale. Each chapter describes what is out there, and, equally important, HOW we know what we know-and you can follow the simple math in each chapter with a smartphone or a hand calculator. Finally, using everyday items found around the house, you can construct a model of each step in the incredible journey across the sea of night.