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Lockheed D-21 – American supersonic reconnaissance drone made 1969
- spricket 8y agoIn modern times we have the X37 hanging out in space for a couple years at a time doing God knows what. My completely unsubstainted guess is that it can change orbital parameters by skipping off the atmosphere like a rock. It seems to move around a lot more than you would expect for something that needs to make it back to a specific runway