Ten space tourism-related designs including spaceships, space hotels and a space suitcase

Artemis is based on the presumption that commercial space travel, and competition within that industry, will drive the cost of putting mass into low Earth orbit down low enough that middle-class people can afford a trip to space. Once that becomes a reality, lunar tourism becomes a viable business model. And that’s the economic foundation of Artemi

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More, viable design for a Dyson Sphere might be a Dyson swarm an enormous set of orbiting panels that collect the sun's power and beam it elsewhere.