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:
Business tourism a large meeting of some kind. Most tourist facilities, such as airports, restaurants and hotels, are shared between leisure and business tourists, through a seasonal difference is often apparent (for example, business tourism may use those facilities during times less attractive for leisure tourists, such as when the weather conditions are less attractive). Business tourism can be divided into: The words meetings, incentive, conferences and exhibition in the context of business tourism are abbreviated as MICE. Business tourism Business tourism or business travel is a more limited and focused subset of regular tourism. During business tourism (traveling), individuals are still