A unique concept, Sub-Orbital Space is the region reached by a spacecraft that climbs to an altitude of 62 miles (100 km) to cross the Karman Line but does not complete an entire orbit. This is often done to test spacecraft designed to orbit the Earth, but there is a growing interest in commercial sub-orbital tourism flights.
A Sub-Orbital flight is generally accomplished by use of rockets or a spaceplane, but it can also be achieved via use of a spacegun, a type of cannon capable of launching an object to the required altitude, though this option is used for unmanned craft only due to the forces involved.
Though no horizontal movement is necessary for a sub-orbital flight, commercial manned flights are likely to follow an elliptical path, covering some distance before beginning the descent and glide back to Earth.
Above 350,000 ft. (100 km)