In this image provided by NASA the space shuttle Endeavour, fresh from the STS-126 mission and mounted atop its modified Boeing 747 carrier aircraft, flew over California's Mojave Desert on its way back to the Kennedy Space Center in Florida on Wednesday Dec. 10, 2008. NASA's soon-to-be-retired space shuttles are up for grabs. The space agency said Wednesday Dec. 17, 2008 it's looking for ideas on where and how best to display its space shuttles once they stop flying in a few years. Beware: NASA estimates it will cost about $42 million to get each shuttle ready and get it where it needs to go, and the final tab could end up much more. The estimate includes $6 million to ferry the spaceship atop a modified jumbo jet to the closest major airport. (AP Photo/NASA)
