highaltitude
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Radical thinks the time has come for solar-powered, high-altitude autonomous aircraft
Though many eyes are on space as orbit develops into a thriving business ecosystem, Radical is keeping things a little…
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Test flights on tap for Space Perspective’s luxury high-altitude balloon
Enlarge / Space Perspective’s first test capsule, Excelsior, has a diameter of approximately 16 feet (4.9 meters). Space Perspective could…
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