NASA Debates Hubble Servicing Mission Safety Concerns

摘要

Despite the success of NASA's second shuttle flight since the 2003 Columbia tragedy, the decision to launch astronauts to the Hubble Space Telescope remains uncertain as top agency officials debate its safety. The shuttle Discovery's near flawless STS-121 mission in July completed NASA's return-to-flight effort and demonstrated that post-Columbia safety improvements appear to be effective.