a vacuum airship for exploring other planets
I guess the safest and cheapest airship anyone could send to other planets would be empty! Just needs a geodesic structure that holds up and contains well, nothing!
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Yeah, a geodesic ball that opens up to contain nothing, and it expands and contracts in order to go up and down. Could be a good idea in the end.
Great idea, Curious Droid covered NASA’s investigation into developing them for planetary research.
An airship spacecraft is in the pipeline I think