Barack Obama, the US president, is to outline his vision for the future of the nation's space programme on Thursday, including ending a programme to send US astronauts back to the moon in a decade.
But the move, due to a budget cut, has drawn criticism from Neil Armstrong, the first man on the moon, and two fellow astronauts, saying it will destroy, with a stroke of a pen, what has taken decades to build up.
Al Jazeera's Cath Turner reports.
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