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Monday, September 04, 2006

Lower Earth Orbit

Most manned spaceflights have been in LEO, including all Space Shuttle and various space station missions; the only exceptions have been suborbital test flights such as the early Project Mercury missions and the flights of the X-15 rocket plane (which was not intended to reach LEO), and the Project Apollo missions to the Moon (which went beyond LEO). Launch to learn more..


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