Interstellar travel would be much more difficult than interplanetary spaceflight. This is a list of past, present, and future spacecraft designed for human spaceflight. Despite his initial lack of interest in spaceflight, he agreed to pursue astronaut selection. In the form of rocket engines they power fireworks, model rocketry, spaceflight, and military missiles. Examples include ballistic missiles, orbital spaceflight etc. Cultures lacking resources to achieve crewed spaceflight are ignored as animals. Weir studied orbital mechanics, astronomy, and the history of human spaceflight. There are various spaceports, including spaceports of human spaceflight and other launch systems (space logistics). This was the first such achievement by a rocket for orbital spaceflight. The program laid the foundation for NASA's subsequent human spaceflight capability. It was the tenth crewed American spaceflight (including two X-15 flights at altitudes exceeding ). Apollo set several major human spaceflight milestones. Apollo set major milestones in human spaceflight. His flight demonstrated the ability to perform tasks during spaceflight. SpaceShipOne's first official spaceflight, known as flight 15P, was piloted by Mike Melvill.