In a selection process reminiscent of the bidding for an Olympic host city, NASA on Tuesday announced the new retirement homes for the four remaining space shuttles, which have been carrying astronauts into space for three decades. The space shuttle Atlantis will be displayed at the Kennedy Space Center Visitor Complex in Florida, which observers agreed was a shoe in for such a bid. The Discovery, which completed its final flight last month, is headed to the Smithsonian, for display at the spacious Steven F. Udvar-Hazy Center near Washington Dulles International Airport. The Endeavour, currently on the launching pad for its final space flight, will go to the California Science Center in Los Angeles. The Enterprise, which never went into space but was used as the shuttle program’s glide test vehicle, will be moved from the Smithsonian to the Intrepid Sea, Air & Space Museum in New York City.