Assuming military operations will occur throughout the solar system in the near future, they will occur within the interplanetary medium and on the planets and other celestial objects. This book takes a look at what of military space operations in these two geographic regimes of the solar system might look like. It also is an analysis of how both natural and military environmental factors there will affect those activities. The natural environment can be distilled down to the electromagnetic spectrum and the table of elements, and other scientific cataloging systems. Military operations within the solar system will continue to be affected by "weather." However, the weather outside the Earth's atmosphere refers primarily to the solar radiation that is propagated from the sun outward to the edge of the solar system. Military operations on the planets and the other celestial objects of the solar system will continue to have to deal with the same geological and geographic factors that they have dealt with on Earth. At the outset of the 21st century, military space operations are already a reality. They are focused on the zone of artificial satellites that orbit the Earth, which interact with military operations in the terrestrial atmosphere and surface. At the same time, private sector corporations and other organizations are actively conducting research and development of systems that eventually will enable them to do such things as build permanent settlements on Mars, the Moon, and even some asteroids. As these commercial enterprises continue to develop a new extraterrestrial civilization, the need for some kind of military "security" organization will become a reality. This glimpse into the future is done from the perspective of more than 30 years of combined experience as a military geographer, military intelligence officer, and computer specialist. Drawing from the experiences of NASA in space during the past 50 years, the author examines the "geographic" factors that have affected space exploration are applied to the hypothetical military operations throughout the solar system during the 21st century. From this analysis, the future of military space operations in the future can be extrapolated. For a more detailed description of this book, the author may be contacted at: [email protected] The science, engineering and technology that has been developed by NASA is seen as a treasure trove of data and skill sets, from which pontential lessions about the military geography of the entire solar system, and possible military space weapons and tactics might be inferred.