A Gopher turtle and the shuttle Endeavour
A Gopher turtle on May 15, 2011 as it crosses the crawlerway in front of launch pad 39-A where the shuttle Endeavour stands at Kennedy Space Center, Florida. NASA Sunday readied the space shuttle Endeavour for its final mission with liftoff set for 8:56 am (1256 GMT) Monday on the next-to-last flight for the American shuttle program. Engineers were optimistic that the repaired shuttle would be able to fly on its 16-day mission to the International Space Station, after a technical glitch postponed its attempt last month. (Photo credit: BRUCE WEAVER/AFP/Getty Images)