Moonbase

astronaut Pete Conrad with Surveyor 3 and Apollo 12 lunar base with the Intrepid lander and S-band antenna in the background, in a first ever visit of a separate mission beyond Low Earth Orbit The Apollo Program established the first six temporary bases on the Moon, starting with Tranquility Base (1969). Later robotic missions set up simple robotic temporary bases, rovers and sample-return missions leaving their landers behind, starting with Luna 16 (1970). (1970), with its return stage separating from its lander. ==Regulation==

The 1967 Outer Space Treaty defines the Moon and all outer space as the "province of all mankind". It restricts the use of the Moon to peaceful purposes, explicitly banning military installations and weapons of mass destruction. A majority of countries are parties of this treaty. The 1979 Moon Agreement was created to elaborate on the Outer Space Treaty, restricting the exploitation of the Moon's resources, particularly by any single nation, leaving it to a yet unspecified international regulatory regime. As of January 2020, the Moon Agreement has been signed and ratified by 18 nations, none of which have human spaceflight capabilities. Current lunar programs are multilateral, with the US-led Artemis program and the China-led International Lunar Research Station. For broader international cooperation and coordination the International Lunar Exploration Working Group (ILEWG), the Moon Village Association (MVA) and more generally the International Space Exploration Coordination Group (ISECG) has been established. Since 2020, countries have joined the U.S. in their Artemis Accords, which are challenging the treaty. The U.S. has furthermore emphasized in a presidential executive order ("Encouraging International Support for the Recovery and Use of Space Resources.") that "the United States does not view outer space as a 'global commons and calls the Moon Agreement "a failed attempt at constraining free enterprise." With Australia signing and ratifying both the Moon Treaty in 1986 as well as the Artemis Accords in 2020, there has been a discussion if they can be harmonized. In this light an Implementation Agreement for the Moon Treaty has been advocated for, as a way to compensate for the shortcomings of the Moon Treaty and to harmonize it with other laws and agreements such as the Artemis Accords, allowing it to be more widely accepted. and interest groups have argued for making such sites World Heritage Sites and zones of scientific value protected zones, all of which add to the legal availability and territorialization of the Moon. == Moon Village concept==

The European Space Agency (ESA) endorsed a Moon Village concept in 2015. The "Village" is an international group of public and private investors, scientists, engineers, universities, and corporate actors coordinating to build and share infrastructure on the Moon and in cislunar space. Moon Village promotes international cooperation and the commercialization of space. The Moon Village Association is a nonprofit organization established in Vienna in November 2017. with the mission to create a global forum to build and maintain a permanent human settlement near the lunar south pole, taking advantage of near-continuous sunlight and nearby deposits of ice and other useful volatiles. and a first step toward Martian exploration. Wörner suggested the Moon Village as a successor to the orbiting International Space Station (ISS). China has expressed interest in the Moon Village as has NASA, as the Moon Village relates to NASA's proposed Lunar Gateway space station. The private aerospace company Blue Origin has expressed early interest and offered to develop a cargo lander with a capacity of usable payload. from 2018 of a future moonbase being shielded by in-situ utilized regolith In 2018, the Vienna University of Technology received sponsorship from ESA for a design workshop on the topic of the Moon Village. 35 master students have developed hypothetical scenarios for a future Moon village. The cooperative concept of the workshop led to a number of new themes, such as multipurpose mobile infrastructure, an astro-scientist training campus on the Moon, an experimental research food lab, and a lunar recycling facility. == Chinese concept ==

In 2020, China proposed the International Lunar Research Station (ILRS), a somewhat similar proposal to the Moon Village, with the Russian space agency Roscosmos and the ESA showing interest. The first steps toward establishing the ILRS will be taken through Phase IV of the Chinese Lunar Exploration Program, consisting of Chang'e 6, 7, and 8, as well as the Russian missions, Luna 25, 26, and 27. Long-term robotic and short-term crew missions at the ILRS are expected to begin in the early 2030s. Roscosmos signed a memorandum of understanding on cooperation in the creation of the ILRS with CNSA on March 9, 2021. There is a projected timeline stretching from the 2030s to 2045. The China National Space Administration (CNSA) has commenced the Chang'e program for exploring the Moon to investigate the prospect of lunar mining, specifically for mining isotope helium-3 for use as an energy source on Earth. CNSA director Luan Enjie has stated that humans must learn to leave Earth and "set up a self-sufficient extraterrestrial homeland". On March 9, 2021, Russia and China signed a memorandum of understanding for the joint construction of the International Lunar Research Station (ILRS) around 2035. == Russian concept==

The Russian Federal Space Agency (Roscosmos) has planned a fully robotic lunar base called Lunny Poligon. The project was planned for 2020, with an expected completion date of 2037. On March 9, 2021, Russia turned to cooperate with China and signed a memorandum of understanding for the joint construction of the International Lunar Research Station (ILRS). == United States concepts ==

The United States has run several attempts to design and in some cases develop lunar outposts and the needed missions, the first being from 1959, with the upcoming Artemis missions being the most advanced. Current: Artemis Program Foundational Surface Habitat: Multi-Purpose Habitation module with a Foundational Surface Habitat and a Pressurized rover ("Mobile Habitat") Under a bilateral Moon cooperation agreement between NASA and ASI and within the Artemis Accords, Thales Alenia Space is designing a Foundational Surface Habitat, the Multi-Purpose Habitation (MPH) module. The MPH module will host Artemis astronauts and support both surface operations and scientific research experiments. It will operate both with and without the presence of a human crew and will have the ability to move on the surface. In March 2026 ISA president Teodoro Valente indicated, "A long-standing space cooperation, now even deeper, between NASA and ASI will lead to the creation of a base camp on the Moon and an Italian astronaut walking on the lunar surface." == Soviet Union concepts (defunct) ==

Zvezda Zvezda moonbase (, "star") was a Soviet plan and project from 1962 to 1974 to construct a crewed moonbase as successor to the N1-L3 crewed lunar expedition program. The project was ordered by the Soviet space chief Korolyov to Barmin's Spetcmash bureau. The project was named DLB Lunar Base in technical specifications and Zvezda in government documents. Unofficially, the project was called Barmingrad (Barmin's city) by its designers. The realization of the project depended on key parts of the N1-L3 program – the N-1 superheavy launcher, all 4 launches of which failed between 1969 and 1972. Zvezda moonbase was cancelled with the rest of the Soviet human lunar programs. All crewed Soviet lunar programs, including a Zvezda moonbase, had been classified as top secret and were only published in the glasnost epoch since 1990. Lunar Expeditionary Complex Energia Lunar Expedition == Other concepts ==

s have been envisioned to house humans (NASA drawing of astronauts exploring a cave on the Moon, 1988). In 1954, science fiction writer Arthur C. Clarke proposed a lunar base of inflatable modules covered in lunar dust for insulation. A spaceship assembled in low Earth orbit would launch to the Moon, and astronauts would set up the igloo-like modules and an inflatable radio mast. Subsequent steps would include the establishment of a larger, permanent dome; an algae-based air purifier; a nuclear reactor for the provision of power; and electromagnetic cannons to launch cargo and fuel to interplanetary vessels in space. In 1959, John S. Rinehart suggested that the safest design would be a structure that could "[float] in a stationary ocean of dust", since there were, at the time this concept was outlined, theories that there could be mile-deep dust oceans on the Moon. The proposed design consisted of a half-cylinder with half-domes at both ends, with a micrometeoroid shield placed above the base. In 1962, John DeNike and Stanley Zahn published their idea of a sub-surface base located at the Sea of Tranquility. This base would house a crew of 21, in modules placed four meters below the surface, which was believed to provide radiation shielding on par with Earth's atmosphere. DeNike and Zahn favored nuclear reactors for energy production, because they were more efficient than solar panels, and would also overcome the problems with the long lunar nights. For the life support system, an algae-based gas exchanger was proposed. , the Japanese Aerospace Exploration Agency (JAXA) planned a human lunar landing around 2020 that would lead to a crewed lunar base by 2030; however, there was no budget yet for this project. In 2007, Jim Burke, of the International Space University in France, said people should plan to preserve humanity's culture in the event of a civilization-stopping asteroid impact with Earth. A Lunar Noah's Ark was proposed. Subsequent planning may be taken up by the International Lunar Exploration Working Group (ILEWG). In 2010, The Moon Capital Competition offered a prize for a design of a lunar habitat intended to be an underground international commercial center capable of supporting a residential staff of 60 people and their families. The Moon Capital is intended to be self-sufficient with respect to food and other material required for life support. Prize money was provided primarily by the Boston Society of Architects, Google Lunar X Prize and The New England Council of the American Institute of Aeronautics and Astronautics. == Surface infrastructure ==

Lunar Laser Ranging Retroreflector Besides temporary infrastructure of lunar missions, some of the permanently placed artificial objects on the Moon have already fulfilled long-term purposes. Since 1969, retroreflectors have been installed on the surface of the Moon and are actively used for lunar laser ranging. Equatorial sites have been described as easier for landing and launch and allowing constant communication with Earth, although long lunar nights pose challenges for power. In the 2010s, the International Lunar Network consisting of robotic instruments placed around the moon was also proposed. ==Orbital infrastructure==

Lunar orbital spacecraft have been supporting lunar bases since the use of the Apollo command and service module in lunar orbit. Today an increasing number of lunar satellites provide different services to surface missions and possibly to lunar bases. The current lunar landing Artemis program was to be supported by the since shelved Lunar Gateway. , proposed as a communication hub, science laboratory, short-term habitation for crewed missions and holding area for rovers in Lunar orbit == See also ==