Kristian von Bengtson and Peter Madsen are amateur Danish rocket builders working to blast into space using home-built rockets. The two men may make Denmark the fourth nation to launch a person into space.

The amateur Danish rocket builders aren't hobbyists, but are actually founders of Copenhagen Suborbitals, the company working on the project. They plan to launch their HEAT-1X rocket 'Tycho Brahe' in an unmanned test flight to be followed with a manned flight in the foreseeable future.