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 Mobile USA Mobile USA common stock. Prior to the purchase, Sprint Nextel owned 13.1% of Virgin Mobile USA. After the acquisition, Sprint Nextel formed the "Sprint Prepaid Group" an organizational division which included Sprint's other prepaid offerings, Boost Mobile and Common Cents Mobile. In May 2010, Virgin Mobile USA began offering its first smartphone, the BlackBerry Curve 8530, combined with new, unlimited text and data Beyond Talk-branded plans. Sprint Nextel announced in March 2010 that Virgin Mobile USA would stop providing service to Helio post-paid customers on May 25, 2010. Sprint Nextel offered Helio customers incentives to switch to Sprint-branded service plans.