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I've been rolling these thoughts through my mind for some time now.
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For me it's that pure steam has aerostatic lift approximate to Helium: en.wikipedia.org/wiki/Thermal_airship
A lenticulat toroidal airframe: lynceans.org/wp-content/uploads/2021/09/Thermo-Skyships_hybrid-thermal-airships.pdf
How light can you make an insulative solar-thermal envelope?
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
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