Funding threatens US return to moon by 2020

US ambitions of returning to the moon by 2020 and then heading to Mars risk being grounded because of "unrealistic" funds allocated to NASA, said Senator Bill Nelson, a former space shuttle astronaut."NASA simply can't do the job it's been given -- the president's goal of being on the moon by 2020," Nelson told the first public meeting of the Review of US Human Space Flight Plans Committee in