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:
The Virgin Book of British Hit Singles The Virgin Book of British Hit Singles The Virgin Book of British Hit Singles is a charts reference book published in October 2008. It replaces the "Guinness Book of British Hit Singles & Albums", after the Guinness company withdrew interest in chart reference books at the same time their contract was due to expire. The last edition was published in 2006 covering all chart hits between 1952-2005. Two years later Virgin took over the contract from The Official Charts Company to publish the re-branded version of the book as "The Virgin Book of British Hit Singles" without the album charts