Space architecture of space and a space transportation infrastructure can be accelerated. Virgin Galactic has indicated plans for an orbital craft, SpaceShipThree. The demand for space tourism is one without bound. It is not difficult to imagine lunar parks or cruises by Venus. Another impetus to become a spacefaring species is planetary defense. The classic space mission is the Earth-colliding asteroid interception mission. Using nuclear detonations to split or deflect the asteroid is risky at best. Such a tactic could actually make the problem worse by increasing the amount of asteroid fragments that do end up hitting the Earth. Robert Zubrin writes:
Virgin Sun Airlines Virgin Sun Airlines Virgin Sun Airlines, branded as Virgin Sun, was a British charter airline owned by the Virgin Group, formed in 1998. The airline's main destinations were the Mediterranean and the Canary Islands. Virgin Sun's main bases were Manchester Airport and London Gatwick Airport. Virgin Sun was created as a charter airline in May 1999, operating from Gatwick Airport and Manchester Airport Terminal 2, leasing 2 Airbus A320-200 aircraft. After a successful launch and first summer season, Virgin Sun then received a third A320-200 and its first and only Airbus A321-200 the following year. The airline was known for