Russian rocket prepared for launch to space station http://www.chron.com/cs/CDA/ssistory.mpl/space/1881770 . NASA TV coverage of mission . Expedition 7 mission overview . Biographies of crew members BAIKONUR, Kazakhstan -- A giant hangar door in the Baikonur Cosmodrome slid open today, revealing the Russian rocket scheduled to blast off this week in the first manned launch since the Columbia shuttle disaster. The 130-foot rocket, topped with the Soyuz TMA-2 spacecraft, is set to take off Saturday from Russia's most storied launch pad, affectionately known as "Gagarin Launch" after Yuri Gagarin, the first human in space. The small white spaceship will ferry Russian cosmonaut Yuri Malenchenko and American astronaut Edward Lu to the international space station for a six-month stay. They will replace U.S. astronauts Kenneth Bowersox and Donald Pettit and cosmonaut Nikolai Budarin, who have been in space since November. "The launch of the Soyuz takes on a major importance ... in wake of the Columbia accident," NASA spokesman Ron Navias said. "It illustrates the true mettle of an international partnership that put this mission together in less than three months time." Getty Images / NASA Russian Soyuz TMA-2 rocket is erected at a launch pad today in Baikonur, Kazakhstan. Russian cosmonaut Yuri Malenchenko and American astronaut Edward Lu will take off from Baikonur Friday night to the International Space Station. The Russian government agreed earlier this month to boost funding for building more spacecraft to fill the gap left by the suspension of the shuttle flights. Russia also rearranged its own space schedule to take over NASA's commitment to deliver the new crew and thereby maintain the station's goal of permanently inhabiting space. Until space shuttles start flying again, Russian rockets remain the only link with the space station, located some 250 miles from Earth. The three will return to Earth in early May on an older Soyuz spaceship already docked at the station. "Everything is ready to go," said Sergei Gorbunov, chief spokesman for Rosaviakosmos, the Russian space agency, after the rocket was carried by train about a mile across the barren Kazakh steppe to the launch pad and gently hoisted into position. Columbia disintegrated on Feb. 1 over Texas, killing all seven astronauts. A breach along the leading edge of the left wing that let in hot atmospheric gases is considered to be the most likely cause. "Columbia has affected us in so many ways," said Anatoly Pavlov, deputy director of the Baikonur factory responsible for putting together the Progress cargo vessels that deliver food, fuel and water to the space station. "But as with anything else, we are carrying on and trying to get the job done." The Russian manned space program has had no fatalities since three cosmonauts died during re-entry in 1971, although it has had some close calls. Russians bristle at suggestions that the Soyuz, unlike the more glamorous shuttle, is based on outdated technology. Anatoly Zak, a Russian space historian, said that while the craft may look like it hasn't changed much, "all of the crucial systems have been updated." Meanwhile, Russia's own version of the shuttle, the Buran, or Blizzard, was mothballed after a single, flawless unmanned flight in 1988 because of money problems. A single Buran -- its surface chipped by the elements and scrawled with graffiti -- sits parked between two crumbling bunkers a few miles from the main launch pad, the site where Gagarin became the first man to roar into space in 1961