What if We Lived on the Moon?
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Voice over:
https://www.youtube.com/ThatGuyWithAVoice

What If We Are Alone In The Universe?
https://youtu.be/myIa2F19uec

How Did Life Begin?
https://youtu.be/feXyXKpHdrc

The True Science of Parallel Universes
https://youtu.be/-xbJmVrz1jI

What Happens At The Edge Of The Universe?
https://youtu.be/hw8noakRT7w

What Would Happen If The Sun Suddenly Disappeared?
https://youtu.be/7tjHa_I4Fak

Is it possible to build a city on the Moon
NASA and ROSCOSMOS made parallel announcements about cooperation to build the new lunar orbiting space station very recently. NASA has been working with its partners to build the new space station, and everybody is thrilled now that ROSCOSMOS (Russian Space Agency) has joined in the fun.

Since the Moon has only a trace of atmosphere, it provides no protection from radiation or meteorites. An underground lava tube would keep the inhabitants safe from such dangers. Lava tubes are formed when molten rock pours through fissures, creating a circular tunnel. When the lava flow stops the tubes drain, leaving a flat floor and a strong arched roof.

Such tubes exist here on Earth, but on the Moon they are much larger. They are likely a kilometre tall and wide, so combined with their length, could easily fit any of the Earths largest cities, including all of its tallest buildings. Scientists, researchers, construction crews and everyday citizens would be safe from the hazards of space in there.

The glass roof, made from lunar silica would be supported by titanium and aluminium frames, but narrow enough to be almost invisible from inside on the ground. Even though several metres thick (in multiple layers to control thermal expansion and contraction) it would still be transparent.

It could be days before there was significant loss. That would plenty of time to repair it. The fastest strategy would probably be a giant Kevlar beach ball that could be placed over the breach and be held in place by the air pressure inside the dome while a repair was executed by an external team composed of the original robots that built the dome.

Beneath the surface city would be a subterranean city containing infrastructure. This is a leftover of where the original inhabitants and construction workers lived before the dome was complete. It would contain living space sufficient for all residents, in the event of a catastrophic dome failure.

In the case of a very large hole, cryogenic coolers could rapidly condense the atmosphere inside the dome to a liquid state, saving as much as 80% of the atmosphere until the dome could be repaired. Its a small possibility, but one worth being prepared for.

Such an enclosed crater would have an area exceeding 1250 km2 (485 sq. miles), or a little more than 20 times the size of Manhattan Island. Not only would it make a fine place to live, it could take decades to fully explore.

Looking at the image above, you might also note that almost 20% of the crater is taken up by a central lake about 5 times the size of Manhattan. We could fill it by mining ice from permanently shadowed craters located around the Moons poles, and it would serve as the central reservoir for the entire city, supporting aquaculture food, as well as fish populations.