The specialized book "Space Weather Phenomena Affecting Geo-Space" offers a comprehensive analysis of the effects of solar activities on the Earth and its surroundings. It highlights the various disturbances caused by solar influences and examines the complex cause-and-effect relationships associated with these phenomena. The impacts of space weather are of significant importance, as they can affect the performance and reliability of technological systems both on Earth and in space. Additionally, they pose serious dangers to individuals exposed to intense radiation and energetic particles. In recent decades, significant progress has been made in developing techniques to predict extreme space weather conditions in order to take preventive measures. This book provides insights into the challenges and achievements in this research field and discusses the need for a deeper understanding of the underlying processes as well as the use of advanced instruments for observation.