Space probe finds ice in 15 craters on the Moon’s south pole and reveals enough water to sustain up to 100 astronauts, paving the way for the first permanent human bases beyond Earth

Lunar ice data rekindles interest in the Moon’s south pole, a region treated by NASA as strategic for future human missions and for research into resources that can support off-Earth operations.

The presence of water ice at the Moon’s south pole is considered by NASA as one of the relevant factors for long-duration human missions, but there is no secure official confirmation that a probe has identified ice in 15 specific craters nor that there is a proven volume to sustain 100 astronauts.

What public data indicates is the existence of water and ice in lunar regions, especially in permanently shadowed areas, in addition to orbital maps that help pinpoint locations with a higher probability of this resource’s concentration.

This information requires caution because the detection of signals associated with water does not necessarily equate to the confirmation of an exploitable reserve.

For ice to be used in lunar bases, it will still be necessary to measure concentration, depth, distribution, and purity directly on the ground.

This data is necessary to assess whether extraction can occur on a sufficient scale to supply crews.

In future missions, water could have different uses.

These include human consumption, hygiene, oxygen production, and, in industrial processes, the separation of hydrogen and oxygen for propellants.

Practical application, however, depends on systems capable of extracting, purifying, storing, and recycling water in an environment of low gravity, abrasive dust, and extreme temperatures.

Water on the Moon: What NASA has already confirmed

The LCROSS mission, launched in conjunction with the Lunar Reconnaissance Orbiter, aimed to confirm the presence of water ice in a permanently shadowed crater near the lunar south pole.

According to NASA, the mission identified frozen water after the impact of a rocket stage in the Cabeus crater region in October 2009.

Since then, orbital instruments and scientific studies have been refining maps of temperature, hydrogen, and surface characteristics.

These surveys help locate areas where ice may be preserved but do not replace direct measurements made by ground equipment.

The difference is relevant because the ice can be mixed with regolith, trapped in microscopic grains, or distributed in low concentrations.

The US space agency itself points out that there are still open questions about the amount of water available, its exact location, and how it presents itself in the coldest regions of the Moon.

In a scientific outreach text, NASA acknowledges that water was confirmed in Cabeus but emphasizes that its abundance and presence in other ultra-cold regions remain points of investigation.

Lunar south pole and the Artemis program

The lunar south pole concentrates areas of interest for crewed exploration because it brings together permanently shadowed regions, possible ice deposits, and elevated points that can receive solar illumination for longer periods.

According to NASA, this set of conditions guides part of the planning for the Artemis program and scientific missions focused on the lunar surface.

Water, if accessible, can reduce the need to transport large volumes of supplies from Earth.

At a lunar base, life support systems could use the resource for crew supply and oxygen production.

In more advanced stages, electrolysis would allow the separation of the water molecule into hydrogen and oxygen, elements used in propulsion systems.

These applications are part of the concept of using local resources, known by the acronym ISRU in English.

The principle is to utilize materials found in the exploration environment itself to reduce logistical costs and increase mission autonomy.

So far, however, the continuous extraction of lunar ice on an operational scale has not been demonstrated on the Moon’s surface.

Artemis’ recent schedule has also undergone adjustments.

NASA’s official page describes Artemis III as a low-Earth orbit demonstration mission, planned for 2027, intended to test rendezvous and docking capabilities between Orion and commercial spacecraft linked to future lunar landings.

Lunar ice extraction and technical challenges

The technical process to transform lunar ice into usable water involves several steps.

First, it would be necessary to confirm the presence of accessible deposits using instruments on the ground.

Then, robotic machines would have to remove or drill into the frozen regolith, heat the material in a controlled manner, and capture the released vapor.

After collection, the water would need to be condensed and stored in tanks suitable for lunar conditions.

For human use, filtration and quality control systems capable of removing particles, volatile compounds, and potential contaminants would be required.

For use as fuel, the process would include electrolysis and safe storage of the resulting gases.

The VIPER mission was designed to investigate ice and other volatile compounds near the lunar south pole.

In July 2024, however, NASA announced the project’s termination due to increased costs, schedule delays, and future budgetary risks.

The agency later reported that it was evaluating partnership alternatives to try and bring the rover to the surface in another format.

Even with the change, the search for lunar water continues on other fronts.

In March 2026, NASA stated that a neutron detection instrument will be sent on the LUPEX mission, led by JAXA and ISRO, to help search for signs of water ice at the Moon’s south pole.

This type of equipment can help estimate the presence of hydrogen associated with potential water deposits.

Craters of the Moon’s south pole and limits of estimates

Craters such as Shackleton, Shoemaker, Faustini, and Cabeus frequently appear in studies about the lunar south pole.

However, there is no secure official confirmation that each of them has a determined capacity to sustain groups of 50, 30, or 20 astronauts, as the original version of the text suggested.

Without standardized local measurements, this type of calculation cannot be presented as fact.

The Cabeus crater is the most documented case because of the LCROSS mission.

Even so, the confirmation of water in the material ejected by the impact does not, by itself, allow concluding that the region can supply a permanent human base.

For this, it would be necessary to know how much ice exists, where it is, what its concentration is, and whether extraction would be feasible with the available equipment.

Permanently shadowed regions can reach extremely low temperatures, which favors the preservation of volatile compounds over time.

At the same time, these areas present operational obstacles.

The absence of direct sunlight hinders power generation, communications, navigation, and the operation of machines on uneven terrain.

Thus, orbital maps serve as target selection instruments for future missions.

They guide where to land, drill, and collect samples, but do not yet provide a definitive estimate of usable reserves.

Confirmation of practical use will depend on surface missions and extraction tests in a real environment.

Water recycling in space missions

Even if lunar ice is exploited in the future, water recycling will remain a central part of any life support system.

On the International Space Station, NASA reported that it achieved the goal of recovering 98% of water in tests with systems that process air humidity, sweat, breath, urine, and brine.

This rate refers to the station’s orbital environment, not a lunar base already in operation.

Even so, the technology indicates the type of infrastructure that will be necessary for long-duration missions.

In an off-Earth habitat, every liter transported, extracted, or recycled will need to be reused with high technical control.

Water can also be integrated into radiation protection strategies, depending on the design of the habitable modules.

Reservoirs and tanks can be positioned as additional barriers, but this application requires calculation of mass, volume, safety, and maintenance.

In a lunar mission, resource distribution needs to simultaneously consider consumption, protection, and system operation.

Exploration of lunar resources and scientific preservation

The exploration of lunar ice involves scientific, operational, and diplomatic issues.

The Artemis Accords, led by the United States, establish principles of international cooperation, transparency, and the peaceful use of space.

However, the extraction of off-Earth resources remains a topic of discussion among governments, companies, and researchers.

One of the points analyzed by the scientific community is the preservation of permanently shadowed regions.

These areas may contain records of impacts, volatile compounds, and ancient processes of the Solar System.

Landing, drilling, and machine movement activities can alter the environment and contaminate samples if adequate protocols are not in place.

With the available data, the most precise formulation is that there is confirmed water ice in lunar regions and that the south pole gathers locations of interest for future missions.

The assertion that 15 craters have already been confirmed as reserves capable of sustaining 100 astronauts does not have secure official backing in the consulted sources.

Before permanent bases depend on this resource, it will be necessary to demonstrate extraction, treatment, and recycling under real conditions.