Ex-astronauts slam space plan
Washington - Neil Armstrong and other former astronauts say President Barack Obama's vision of future human space travel will cost the US its standing as the long-time leader.
Armstrong, the first man to walk on the moon, and Eugene Cernan, the last astronaut on the moon, told a Senate hearing on Wednesday that Obama's decision to alter the Bush administration blueprint for returning to the moon will undermine Nasa's manned space programme.
Obama told Nasa workers in April that he was committed to manned space exploration and foresaw astronauts orbiting Mars by the mid-2030s. But Cernan asserted that Obama was following a "pledge to mediocrity".