CNN CNN Newsroom June 21, 2013 17:54:00
Orbiters now retired are reminders of both the past and the present. for two years since "atlantis" touched down at the kennedy space center, the u.s. has been without its own means to put astronauts in space. >> we call it a gap. not sure how long it's going to last. that's dependent upon these future commercial providers. >> reporter: commercial companies have taken over ferrying cargo to the international space station. but not people. that was supposed to happen by 2015. now the gap has widened. it's a very iffy 2017. target dates are etched in sand, not stone. not enough money from congre...