If anyone knows how to build a megastructure, it would be China.

With the Great Wall of China being an early example of a megastructure, when Chinese government officials say they have their hearts set on building a mile-long spaceship in orbit around the Earth, we should probably take such a proposal seriously.

What exactly is China proposing, though? How close are they to actually building such a ship? Is such a thing even possible and why would we want to build such a colossal spacecraft?

While the proposal at the moment isn't a substantial commitment on the part of the Chinese government, it does reflect a growing ambition in space exploration for the country. How serious is the proposal and is this something China is seriously pursuing?

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