![]() FILE - In this Monday, Nov. 16, 2009 picture, the space shuttle Atlantis lifts off from pad 39A at the Kennedy Space Center in Cape Canaveral, Fla. The complexity of the reusable spacecraft inspired one of the questions in this edition of 'Ask AP,' a weekly Q&A column where AP journalists respond to readers' questions about the news. (AP Photo/Chris O'Meara) |