Space Port built by Virgin Galactic is a company within Sir Richard Branson's Virgin Group, which plans to offer sub-orbital spaceflights and later orbital spaceflights to the paying public. Virgin Galactic plans to fly 500 passengers a year at about US$200,000 each, to an altitude of slightly over 100 km, with a total weightless time of 6 minutes. Space tourism companies such as Virigin Galactic would increase the number of people flying higher than the defined boundary of space, adding thousands of new "astronauts". Today, the only possible way for private citizens to reach an altitue over 100km and therefore cross the defined space boundary is through commercial orbital spaceflights provided by the Russian Space Agency, costing roughly US$20 million for a six-day flight. After talks throughout 2004, on September 24, 2004 Virgin Galactic signed a deal worth up to US$21 million with Mojave Aerospace Ventures to license the intellectual property behind the Tier One project for purposes of space tourism. The deal was announced by Branson and Burt Rutan on September 27, 2004 at the Royal Aeronautical Society in London. The initial plan is for Rutan to design and build five suborbital tourist craft based on a scaled-up version of SpaceShipOne. Construction began in 2005, with six months of intensive testing (comprising at least 50-100 test flights) planned for 2007. Actual spaceflights for ordinary citizens are expected to begin on the SpaceShipTwo VSS Enterprise in Upham, New Mexico in early 2009.