
The Moon may lack the water, power and other resources to support large populations on the Moon, according to a report in the journal Frontiers in Space Technologies. Forbes magazine and ABC News have spun the article as skeptical of Elon Musk’s plans to build a “self-growing” city of millions of lunar settlers.
“There’s been so much talk and enthusiasm about a future in which the moon is a part of our civilization and abundantly populated, and science fiction shows with extensive cities on the moon and space traffic around it, and so we just wanted to, I guess, throw some cold water, literally, on some of that overoptimism,” co-author Martin Elvis told ABC News.
Co-author Jonathan McDowell said there will be settlements on the Moon but that “there are physics limits to how much of a lunar society you can end up having.”
Water harbored in craters in the Moon’s South Pole could amount to as much as a billion tons, which sounds like a lot, but Elvis and McDowell question if it’s sufficient to sustain a large lunar population over a long period of time. Without recycling, that volume of water would last a city of a million people about two years. With recycling recovery of 98%, a city might last 100 years. “That’s not very much, given the investment in building it,” Elvis said.
Another limit, Elvis told ABC News, was electric power, although he conceded that solar and nuclear power are both options. While a large city may not be realistic, he and McDowell said, a Moon “village” of about 1,000 — comparable to the winter-over population of Antarctica — could be sustainable.
Resource scarcity will be a formidable, though not insurmountable, challenge. I grappled with the issue when writing “Dust Mites” and “Trogs.” It was apparent even to my uncredentialed eye that a billion tons of water in polar craters would be insufficient to support a city of 1.5 million inhabitants (as I envisioned the protagonist colony Galileo Station to be), much less dozens of settlements or the use of the Moon as a “gasoline station” for travel throughout the solar system.
more “Will Resource Constraints Throttle Settlement Growth on the Moon?”







