Commercial and Military Uses of Cislunar Space

Cislunar space, the area between Earth and the Moon, has become a key focus for both commercial and military interests. Its strategic value is highlighted by increasing investments in space exploration, resource harvesting, and defence capabilities. Several commercial opportunities in cislunar space exist.

One of the most promising is resource mining. The Moon is believed to be rich in valuable materials like helium-3, rare earth elements, and water ice. Helium-3, a potential fuel for nuclear fusion reactors, could transform energy production on Earth. Rare earth elements are vital for electronics and advanced tech. At the same time, water ice can be turned into hydrogen and oxygen to fuel transport vehicles, spacecraft, and support long-term lunar settlements. Space tourism is another growing industry with great commercial promise.

Companies such as SpaceX and Blue Origin are working on technologies to take tourists to the Moon and cislunar space. Building lunar habitats could support tourism and serve as bases for scientific research and commercial pursuits. These habitats would require improvements in life support systems, radiation shielding, and sustainable living technologies. Cislunar space also offers prospects for advanced satellite services, including communications, navigation, and Earth observation.

Illustration showing the moon with icons of commercial and military space activities, such as satellites, rockets, a shopping cart, and a tank, with the caption 'Cis-Lunar' in orange.

Deploying satellites in cislunar orbits could boost global communications networks and provide high-resolution imagery for environmental monitoring, disaster response, and national security. Developing satellite constellations in cislunar space might also enhance internet access in remote areas. The Moon and cislunar space offer unique environments for scientific research. The low gravity, absence of atmosphere, and exposure to cosmic radiation make it an ideal location for studying fundamental physics, biology, and materials science.

Setting up research stations on the Moon can enable experiments impossible on Earth, leading to breakthroughs in various scientific fields. On the military front, cislunar space holds considerable strategic importance for national security. Controlling this region allows for improved surveillance and monitoring. Satellites in cislunar space can provide continuous coverage of Earth, tracking missile launches, military movements, and other key activities. The militarisation of cislunar space includes developing defence systems capable of intercepting and neutralising threats from space.

Anti-satellite weapons, space-based missile defence, and directed energy weapons are potential options. Establishing a military presence here can act as a deterrent against hostile actions and protect national and allied interests. Cislunar space could also serve as a logistical hub for military operations, with supply depots, fuel stations, and repair facilities supporting extended missions and reducing reliance on Earth resources.

Illustration of a lunar landscape with various space structures, including a rocket, a geodesic dome, observatories, and a lunar rover, with Earth visible in the night sky.

Pursuing military capabilities in cislunar space will drive technological progress. Advances in propulsion, robotics, artificial intelligence, and communications for military aims can also benefit commercial and scientific pursuits. The dual-use nature of these technologies highlights the close link between military and commercial activities in cislunar space. Utilising cislunar space for both commercial and military purposes will present challenges. The legal and regulatory frameworks governing space activities are still evolving, and international cooperation is vital to prevent conflicts and ensure the sustainable use of space resources. In summary, cislunar space holds enormous potential for both commercial and military applications, offering opportunities in resource extraction, scientific discovery, strategic positioning, and technological development. However, realising these opportunities will require overcoming significant obstacles and fostering global collaboration.