The document summarizes space weapons from a technical perspective. It discusses the basic physics involved in space weapons, including velocity, inertia, and collisions in space. It then outlines three general types of space weapons: Earth-based weapons that move through space like ballistic missiles; Earth-based weapons that attack targets in space like direct ascent anti-satellite missiles and lasers; and space-based weapons like co-orbital anti-satellite weapons and space-based lasers. Specific examples within each category are provided and some of the technical challenges associated with developing operational space weapons are discussed.