Astronauts at the International Space Station have finished installing a Canadian robotic device to help with future maintenance and construction at the orbiting facility.
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In two days of frank discussions behind closed doors, a group of 50 engineers, former astronauts, scientists and former NASA executives concluded that the United States should explore Mars, but needs to rethink how and when to get there.
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Following recent media reports that U.S. astronauts have on occasion flown drunk, NASA will consider instituting limited testing of flight crews and employees, the agency's director said.
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An unmanned Russian cargo spacecraft has docked at the International Space Station after a journey from Earth.
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