Abingdon-based Reaction Engines has designed the Skylon plane to take payloads - or even passengers - into space from a conventional airport and return them back down to the same runway. The design can carry a 12-tonne payload and could, according to the company, fundamentally change the way we view space travel.A recent study into the Skylon’s ability to carry passengers suggests that a trip to orbit in an upright seat, for stays of up to 14 days, would cost around $500,000. Compared with the plans of some groups, Skylon’s space tourism ambitions are still relatively modest. However, the team is also looking to include an upper stage that would move out of low Earth orbit and, if successful, the project could have far wider significance.Skylon is thought to cost about $10m per flight once development costs have been paid. If all goes to plan, within 10 years the UK could become the first country in the world to launch a single-stage spaceplane in orbit.