Suborbital flights

More affordable suborbital space tourism is viewed as a money-making proposition by several
other companies, including Space Adventures, Virgin Galactic, Starchaser, Blue Origin,
Armadillo Aerospace, XCOR Aerospace, Rocketplane Limited, the European "Project Enterprise",
and others. Most are proposing vehicles that make suborbital flights peaking at an
altitude of 100-160 kilometres. Passengers would experience three to six minutes of
weightlessness, a view of a twinkle-free starfield, and a vista of the curved Earth below.
Projected costs are expected to be about $200,000 per passenger.

As of November 2007 Virgin Galactic had pre-sold nearly 200 seats for their suborbital
space tourism flights, according to the company's president.