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China's mysterious Shenlong space plane recently launched on its 4th mission. What is it doing up there?
China's reusable Shenlong space plane launched on its fourth space mission earlier this month. What is it doing in Earth ...
The North American X-15 was built to flirt with the edge of space, not to cross it by accident. Yet on a research mission labeled Flight 90, a routine test profile slipped just far enough out of ...
The North American X-15 did more than set records; it quietly redrew the map of what a piloted aircraft could survive at the edge of space. By pushing hypersonic flight to extremes that still stand ...
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