A bat that apparently had trouble flying instead tried to hitch a ride on the space shuttle Discovery , NASA officials said . Discovery : Bat was last seen clinging on space shuttle Discovery before landing . Wildlife expert said bat appeared to have broken arm or broken leg . Discovery is on 14-day mission to deliver supplies to International Space Station .
Discovery : Bat was last seen clinging on space shuttle Discovery before landing . Wildlife expert said bat appeared to have broken arm or broken leg . Discovery is on 14-day mission to deliver supplies to International Space Station .