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Rocket-powered aircraft - Wikipedia
List of rocket-powered aircraft - Wikipedia
Rocket | Characteristics, Propulsion, Development, & Facts
North American X-15 - Wikipedia
X-15 Hypersonic Research Program - NASA
X-15: The fastest manned rocket plane ever | CNN
X-43A Hyper-X - NASA
65 Years Ago: First Factory Rollout of the X-15 Hypersonic Rocket …
Stratolaunch launches 1st rocket-powered flight of hypersonic …
Virgin Galactic rocket plane flies to edge of space - BBC