Space technology comprises the tools, systems, and methods used for exploring and understanding outer space. It includes spacecraft, satellites, space stations, and various launch vehicles that enable human spaceflight and robotic missions. Advances in space technology has led to significant achievements such as the Moon landing, Mars rovers, and the deployment of telescopes like Hubble, which provide insights into distant galaxies. Innovations in this field has also driven improvements in communication, navigation, and Earth observation, benefiting sectors like weather forecasting, GPS, and environmental monitoring. Moreover, space technology plays a crucial role in scientific research, helping to answer fundamental questions about the universe and our place within it. As technology continues to evolve, it promises to further expand our capabilities in space exploration, potentially enabling human missions to Mars and beyond, and fostering international collaboration in the peaceful use of outer space. This book discusses the fundamentals as well as modern approaches of space technology. Also included in this book is a detailed explanation of the various concepts and applications of space technology. This book will serve as a reference to a broad spectrum of readers.