This book sets out the basics of astronomical knowledge in a simple and accessible form. You will take a fascinating journey through the Universe and learn how to identify planets and stars, how to explore the solar system, the Milky Way and the Universe beyond, what the Big Bang is, quasars, antimatter and much more, how to join the Search for Extraterrestrial Intelligence (SETI) Program . The meaning of modern space exploration will become clearer to you. You will also learn where to start when observing the sky and what equipment is needed for this. The book is intended for a wide range of readers.