"We aim to show the world that human space flight can be different from the usual expensive and government controlled project," the Copenhagen Suborbitals website states. "We are working fulltime to develop a series of suborbital space vehicles — designed to pave the way for manned space flight on a micro size spacecraft."

The company Planetary Resources plans to develop and launch a series of robotic systems and unmanned spacecraft, starting with its Arkyd-100 Earth-orbiting space telescopes that it hopes to launch by the end of 2013 to identify candidate near-Earth asteroids containing natural resources. A single 500-meter platinum-rich asteroid would have the equivalent of all the platinum-group metals ever mined on Earth, the company said. And the right 80-meter asteroid would have more than $100 billion worth of materials, Anderson said.