DK 
Simply Astronomy 

Understanding astronomy has never been easier.
Combining bold graphics with easy-to-understand text, Simply Astronomy is the perfect introduction to astronomy and stargazing for those who are short of time but hungry for knowledge.
Each pared-back entry covers the essentials more clearly than ever before. The opening chapters provide an introduction to the Universe, a visual tour of the Solar System, and an e-guide to more distant objects such as stars and galaxies. Along the way, concepts such as the Big Bang, gravity, and space-time are introduced and explained. Later chapters describe how to navigate around the night sky and introduce some must-see constellations, complete with simple star charts.
Whether you are a complete beginner, or simply want a jargon-free reference to astronomy and stargazing, this essential e-guide includes everything you need to understand the basics quickly and easily.