What if we put a pool on the moon?

A modest pool at home or that wonderful hotel looks like a very good idea, especially in the tropical summer of Brazil, where the heat is intense, right? Well, now imagine a pool in the largest natural satellite on Earth. We try to answer here what would happen if we put a pool on the moon.

The idea of having a moon pool may seem curious and even fun, but in practice physics and extreme conditions of the natural satellite of the Earth would entail unexpected challenges. We better understand what would happen in a pool in a environment so different from our planet.

Why put a pool on the moon?

Imagine -you are a futuristic scenario where humans live in lunar colonies and need forms of entertainment and relaxation. A pool could offer a fun shelter where residents could experience the unique feeling of swimming low gravity. In addition, it would be an excellent place for leisure and socialization in such isolated and challenging environment.

Artistic representation of the Lunar Future Gateway International Space Station, with the moon in the background and the Orion capsule that is approaching for the anchor. Image: NASA/Dissemination

What if we put a pool on the moon?

If we could install a pool on the moon, the first problem would be to keep water in a liquid state. The moon does not have a significant atmosphere and its temperature varies dramatically between – 173 ° C at night and 127 ° C during the day. Without proper protection, water would instantly evaporate or freeze depending on the sun exposure.

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Another important factor would be gravity. Since the moon has only 1/6 of earthly gravity, the water would behave very differently. Instead of forming a flat and stable surface, it would be cathically shaking with any movement.

In addition, a swimmer would have difficulty promoting and moving, as splashes and air bubbles would behave strangely, making swimming much less efficient.

Finally, without proper atmospheric pressure, water would quickly release its dissolved gases, forming bubbles and further hindered their stability. To maintain a functional pool on the Moon, a closed environment and pressure would be needed, as well as a special heating and filtering system.

Representation of the rockets that passes in front of the moon
Artemis III will be the first mission to bring astronauts to the moon after decades of hiatus (Image: Vadim Sadovski/Shutterstock)

Although fascinating, the idea of a lunar pool would require many technological advances to come true. However, imagining the functioning of physics in another world helps us to better understand natural laws and their applications in future space missions.


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