The agency's goal is to find alternative ways of reaching the station, as the space shuttle is set to retire in 2010. After that, the US will not have a domestic spaceship that can transport astronauts and gear to the station until its own Crew Exploration Vehicle flies in about 2014. It expects to need six ISS flights per year after the shuttle's retirement.
Sunday, August 20, 2006
NASA awards seed money to two rocket companies
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