text: No Regrets, Says Departing NASA Boss NASA (news - web sites) #39;s departing boss, Sean O #39;Keefe, said Friday he does not regret canceling the last shuttle mission to the Hubble Space Telescope 
inputs: No Regrets, Says Departing NASA Boss NASA (news - web sites) #39;s departing boss, Sean O #39;Keefe, said Friday he does not regret canceling the last shuttle mission to the Hubble Space Telescope 