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North American X-15 is an experimental rocket-powered aircraft used in a hypersonic research program conducted by the United States Air Force and NASA between 1959 and 1968. Three X-15 aircraft were built under the program, completing a total of 199 flights. The aircraft was designed to study aerodynamic and thermal behavior during both atmospheric and exoatmospheric flight.【1】 Development Process Development of the North American X-15 project began in 1954. As demand for spaceflight and hyperso

Laika, on 3 November 1957, became the first living creature sent into Earth orbit by the Soviet Union aboard the Sputnik 2 spacecraft. Laika, a stray mixed-breed dog from the streets of Moscow, was selected for this historic mission to test the effects of space travel on living organisms. Historical Background In the mid-1950s, the "Space Race" between the United States and the Soviet Union had evolved into a global technological competition. The Soviet Union gained temporary superiority in this