Colonization of the Moon is a process [1] or concept employed by some proposals for robotic [2] [3] or human exploitation and settlement endeavours on the Moon. Often used as a synonym for its more specific element of settling the Moon (the establishing and expanding of lunar habitation), lunar or space colonization as a whole has become contested for perpetuating colonialism and its exploitive logic in space. [4]
Laying claim to the Moon has been declared illegal through international space law and no state has made such claims, [5] despite having a range of probes and artificial remains on the Moon.
While a range of proposals for missions of lunar colonization, exploitation or permanent exploration have been raised, current projects for establishing permanent crewed presence on the Moon are not for colonizing the Moon, but rather focus on building moonbases for exploration and to a lesser extent for exploitation of lunar resources.
The commercialization of the Moon is a contentious issue for national and international lunar regulation and laws (such as the Moon treaty). [6]
Colonization of the Moon has been imagined as early as the first half of the 17th century by John Wilkins in A Discourse Concerning a New Planet. [7] [8]
Colonization of the Moon as a material process has been taking place since the first artificial objects reached the Moon after 1959. Luna landers scattered pennants of the Soviet Union on the Moon, and U.S. flags were symbolically planted at their landing sites by the Apollo astronauts, but no nation claims ownership of any part of the Moon's surface. [10] Russia, China, India, and the U.S. are party to the 1967 Outer Space Treaty, [11] which defines the Moon and all outer space as the "province of all mankind", [10] restricting the use of the Moon to peaceful purposes and explicitly banning military installations and weapons of mass destruction from the Moon. [12]
The landing of U.S. astronauts was seen as a precedent for the superiority of the free-market socioeconomic model of the U.S., and in this case as the successful model for space flight, exploration and ultimately human presence in the form of colonization. In the 1970s the word and goal of colonization was discouraged by NASA and funds as well as focus shifted away from the Moon and particularly to Mars. But the U.S. eventually nevertheless opposed the 1979 Moon Agreement which aimed to restrict the exploitation of the Moon and its resources. Subsequently, the treaty has been signed and ratified by only 18 nations, as of January 2020, [13] none of which engage in self-launched human space exploration.
After U.S. missions in the 1990s suggested the presence of lunar water ice, its actual discovery in the soil at the lunar poles by Chandrayaan-1 (ISRO) in 2008–2009 renewed interest in the Moon. [14] A range of moonbases have been proposed by states and public actors. Currently the U.S.-led international Artemis program seeks to establish with private contractors a state run orbital lunar way-station in the late 2020s, and China proposed with Russia the so-called International Lunar Research Station to be established in the 2030s and aim for an Earth-Moon Space Economic Zone to develop by 2050. [15]
Current proposals mainly have the goal of exploration, but such proposals and projects have increasingly aimed for enabling exploitation or commercialization of the Moon. This move to exploitation has been criticized as colonialist and contrasted by proposals for conservation (e.g. by the organization For All Moonkind), [16] collaborative stewardship (e.g. by the organization Open Lunar Foundation, chaired by Chris Hadfield) [17] and the Declaration of the Rights of the Moon, [18] drawing on the concept of the Rights of Nature for a legal personality of non-human entities in space. [19]
Far from being a colony, the temporary Tranquility Base of the first crewed mission to the Moon in 1969, as well as its successor camps of the Apollo missions, has been the closest to a colony on the Moon so far.
Before and since then a permanent human presence through colonization of the Moon has been pursued and advocated for by a range of civil actors and space advocacy groups. But most importantly different countries have been putting forward concepts and plans for not only new crewed expeditions, but also for moonbases.
The pursued purpose of such moonbases is broad, but is mostly for space exploration, but also for exploiting and commercializing the Moon and advocating for a lunar and cis-lunar infrastructure, economy and settled society.
The most advanced contemporary missions share this spectrum of purpose, between exploration and exploitation. For example, the leading Artemis program and International Lunar Research Station projects, while focusing on exploration, they do both mention prospecting for lunar resource extraction for in-situ resource utilization as an objective, [20] in the case of the American policy including that the Artemis program should furthermore enable resource commercialization and private enterprise. [14]
These bases are planned to be crewed, but only eventually permanently. Commercial proposals though have suggested building and use of moonbases for tourism and possibly settlement.
Although Luna landers scattered pennants of the Soviet Union on the Moon, and U.S. flags were symbolically planted at their landing sites by the Apollo astronauts, no nation claims ownership of any part of the Moon's surface. [21] Likewise no private ownership of parts of the Moon, or as a whole, is considered credible. [22] [23] [24]
The 1967 Outer Space Treaty defines the Moon and all outer space as the "province of all mankind". [21] It restricts the use of the Moon to peaceful purposes, explicitly banning military installations and weapons of mass destruction. [25] A majority of countries are parties of this treaty. [26] The 1979 Moon Agreement was created to elaborate, and restrict the exploitation of the Moon's resources by any single nation, leaving it to a yet unspecified international regulatory regime. [27] As of January 2020, it has been signed and ratified by 18 nations, [28] none of which have human spaceflight capabilities.
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." [29] [30]
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. [31] 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. [32] [33]
In the face of such increasing commercial and national interest, particularly prospecting territories, U.S. lawmakers have introduced in late 2020 specific regulation for the conservation of historic landing sites [34] and interest groups have argued for making such sites World Heritage Sites [35] and zones of scientific value protected zones, all of which add to the legal availability and territorialization of the Moon. [36]
In 2021, the Declaration of the Rights of the Moon [37] was created by a group of "lawyers, space archaeologists and concerned citizens", drawing on precedents in the Rights of Nature movement and the concept of legal personality for non-human entities in space. [38] [39]For long-term sustainability, a space colony should be close to self-sufficient. Mining and refining the Moon's materials on-site – for use both on the Moon and elsewhere in the Solar System – could provide an advantage over deliveries from Earth, as they can be launched into space at a much lower energy cost than from Earth. It is possible that large amounts of cargo would need to be launched into space for interplanetary exploration in the 21st century, and the lower cost of providing goods from the Moon might be attractive. [40]
In the long term, the Moon will likely play an important role in supplying space-based construction facilities with raw materials. [41] Microgravity in space allows for the processing of materials in ways impossible or difficult on Earth, such as "foaming" metals, where a gas is injected into a molten metal, and then the metal is annealed slowly. On Earth, gas bubbles may rise or fall due to their relative density to air, but in a zero gravity environment this does not happen. The annealing process requires large amounts of energy, as a material is kept very hot for an extended period of time (allowing the molecular structure to realign), and this too may be more efficient in space, as the vacuum drastically reduces all heat transfer except through radiative heat loss.
Exporting material to Earth in trade from the Moon is problematic due to the cost of transportation, which would vary greatly if the Moon is industrially developed. One suggested trade commodity is helium-3 (3He) which is carried by the solar wind and accumulated on the Moon's surface over billions of years, but occurs only rarely on Earth. [42] Helium-3 might be present in the lunar regolith in quantities of 0.01 ppm to 0.05 ppm (depending on soil). In 2006 it had a market price of about $1,500 per gram ($1.5M per kilogram), more than 120 times the value per unit weight of gold and over eight times the value of rhodium.
In the future 3He harvested from the Moon may have a role as a fuel in thermonuclear fusion reactors. [42] [43] It should require about 100 metric tons (220,000 lb) of helium-3 to produce the electricity that Earth uses in a year and there should be enough on the Moon to provide that much for 10,000 years. [44]
In 2024, an American startup called Interlune announced plans to mine Helium on the Moon for export to Earth. The first mission plans to use NASA’s Commercial Lunar Payload Services program to arrive on the moon. [45]
To reduce the cost of transport, the Moon could store propellants produced from lunar water at one or several depots between the Earth and the Moon, to resupply rockets or satellites in Earth orbit. [46]
Lunar scientists had discussed the possibility of water repositories for decades. They are now increasingly "confident that the decades-long debate is over" a report says. "The Moon, in fact, has water in all sorts of places; not just locked up in minerals, but scattered throughout the broken-up surface, and, potentially, in blocks or sheets of ice at depth." The results from the Chandrayaan mission are also "offering a wide array of watery signals." [47] [48]
It is estimated there is at least 600 million tons of ice at the north pole in sheets of relatively pure ice at least a couple of meters thick. [49]
Gerard K. O'Neill, noting the problem of high launch costs in the early 1970s, proposed building Solar Power Satellites in orbit with materials from the Moon. [50] Launch costs from the Moon would vary significantly if the Moon is industrially developed. This proposal was based on the contemporary estimates of future launch costs of the Space Shuttle.
On April 30, 1979, the Final Report "Lunar Resources Utilization for Space Construction" by General Dynamics Convair Division under NASA contract, NAS9-15560 concluded that the use of lunar resources would be cheaper than terrestrial materials for a system comprising as few as thirty Solar Power Satellites of 10 GW capacity each. [51]
In 1980, when NASA's launch cost estimates for the Space Shuttle were grossly optimistic, O'Neill et al. published another route to manufacturing using lunar materials with much lower startup costs. [52] This 1980s SPS concept relied less on human presence in space and more on partially self-replicating systems on the lunar surface under telepresence control of workers stationed on Earth.
The Moon is Earth's only natural satellite. It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have synchronized the Moon's orbital period with its rotation period at 29.5 Earth days, causing the same side of the Moon to always face Earth. The Moon's gravitational pull—and, to a lesser extent, the Sun's—are the main drivers of Earth's tides.
Space exploration is the use of astronomy and space technology to explore outer space. While the exploration of space is currently carried out mainly by astronomers with telescopes, its physical exploration is conducted both by uncrewed robotic space probes and human spaceflight. Space exploration, like its classical form astronomy, is one of the main sources for space science.
Space colonization is the process of establishing human settlements beyond Earth for prestige, commercial and strategic benefits. This is in contrast to space exploration for scientific benefits. Colonialism can involve exploitation of both resources and people by a distant entity.
The Outer Space Treaty, formally the Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies, is a multilateral treaty that forms the basis of international space law. Negotiated and drafted under the auspices of the United Nations, it was opened for signature in the United States, the United Kingdom, and the Soviet Union on 27 January 1967, entering into force on 10 October 1967. As of March 2024, 115 countries are parties to the treaty—including all major spacefaring nations—and another 22 are signatories.
Space law is the body of law governing space-related activities, encompassing both international and domestic agreements, rules, and principles. Parameters of space law include space exploration, liability for damage, weapons use, rescue efforts, environmental preservation, information sharing, new technologies, and ethics. Other fields of law, such as administrative law, intellectual property law, arms control law, insurance law, environmental law, criminal law, and commercial law, are also integrated within space law.
The Agreement Governing the Activities of States on the Moon and Other Celestial Bodies, better known as the Moon Treaty or Moon Agreement, is a multilateral treaty that turns jurisdiction of all celestial bodies over to the participant countries. Thus, all activities would conform to international law, including the United Nations Charter.
Asteroid mining is the hypothetical extraction of materials from asteroids and other minor planets, including near-Earth objects.
The following outline is provided as an overview of and topical guide to space exploration.
The National Aeronautics and Space Administration (NASA) has proposed several concept moonbases for achieving a permanent presence of humans on the Moon since the late 1950s. Research and exploration of the Moon have been a large focus of the organization since the Apollo program. NASA's peak budget was in 1964–1965, when it comprised 4% of all federal spending in service of the Apollo Moon landing project. Though lunar landings since the conclusion of the Apollo program in 1972 have ceased, interest in establishing a permanent habitation on the lunar surface or beyond low Earth orbit has remained steady. Recently, renewed interest in lunar landing has led to increased funding and project planning. NASA requested an increase in the 2020 budget of $1.6 billion, in order to make another crewed mission to the Moon under the Artemis program by 2025, followed by a sustained presence on the Moon by 2028. A crew was selected for the planned crewed mission, Artemis II, in April 2023.
A moonbase is a human outpost on or below the surface of the Moon. More than a mere site of activity or temporary camp, moonbases are extraterrestrial bases, supporting robotic or human activity, by providing surface infrastructure. Missions to the Moon have realized single-mission bases,, as well as some small permanent infrastructure like lunar laser ranging installations.
Space-based economy is economic activity in outer space, including asteroid mining, space manufacturing, space trade, space burial, space advertising and construction performed in space such as the building of space stations.
The politics of outer space includes space treaties, law in space, international cooperation and conflict in space exploration, international economics, and the hypothetical political impact of any contact with extraterrestrial intelligence.
Human presence in space is the direct and mediated presence or telepresence of humans in outer space and in a broader sense also on any extraterrestrial astronomical body. Human presence in space, particularly through mediation, can take many physical forms from space debris, uncrewed spacecraft, artificial satellites, space observatories, crewed spacecraft, art in space, to human outposts in outer space such as space stations.
The space policy of the United States includes both the making of space policy through the legislative process, and the implementation of that policy in the United States' civilian and military space programs through regulatory agencies. The early history of United States space policy is linked to the US–Soviet Space Race of the 1960s, which gave way to the Space Shuttle program. At the moment, the US space policy is aimed at the exploration of the Moon and the subsequent colonization of Mars.
The following outline is provided as an overview of and topical guide to the Moon:
For All Moonkind, Inc. is a volunteer international nonprofit organization which is working with the United Nations and the international community to manage the preservation of history and human heritage in outer space. The organization believes that the lunar landing sites and items from space missions are of great value to the public and is pushing the United Nations to create rules that will protect lunar items and secure heritage sites on the Moon and other celestial bodies. Protection is necessary as many nations and companies are planning on returning to the Moon, and it is not difficult to imagine the damage an autonomous vehicle or an errant astronaut—an explorer, colonist or tourist—could to one of the Moon landing sites, whether intentionally or unintentionally.
The Artemis program is a Moon exploration program led by the United States' National Aeronautics and Space Administration (NASA), formally established in 2017 via Space Policy Directive 1. It is intended to reestablish a human presence on the Moon for the first time since the Apollo 17 mission in 1972. The program's stated long-term goal is to establish a permanent base on the Moon to facilitate human missions to Mars.
The Moon bears substantial natural resources which could be exploited in the future. Potential lunar resources may encompass processable materials such as volatiles and minerals, along with geologic structures such as lava tubes that, together, might enable lunar habitation. The use of resources on the Moon may provide a means of reducing the cost and risk of lunar exploration and beyond.
The Artemis Accords is a series of non-binding multilateral arrangements between the United States government and other world governments that elaborates on the norms expected to be followed in outer space. The Accords are related to the Artemis program, an American-led effort to return humans to the Moon by 2026, with the ultimate goal of expanding space exploration to Mars and beyond.
Michelle Lea Desyin Slawecki Hanlon is an American space lawyer and space law professor. She is the co-founder, president and chief executive officer of For All Moonkind, and Executive Director of the Center for Air and Space Law at the University of Mississippi School of Law.
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