Space shuttle Discovery's next mission will be to awe and inspire those who visit it at the Smithsonian Institution. NASA's workhorse shuttle was retired after completing its trip last week to the International Space Station -- that’s 39 missions covering 5,750 orbits, 150 million miles, and almost a year in space since it first lifted off in 1984. It's name was inspired by the exploring ships of the past, including one that plied the Hudson Bay in the early 1600s seeking a northwest passage from the Atlantic to the Pacific oceans...