Tourist space flights
Unlike the cosmoplane, tourist flights into orbit are already a reality. Space Adventures offers a seven to 10 day trip aboard a Russian Soyuz capsule or a 16-day stay complete with space walk. The $20 million (£14 million) fare, however, makes these holidays out of most people's league.
But the company clearly has a market. For travellers who would find near-Earth orbit a little too close to home, it is planning a journey to the moon, costing $100 million.
For more information visit the Space Adventures website.