For more than 40 years, the "Apollo to the Moon" gallery at the National Air and Space Museum has provided millions of visitors a close-up look at some of the key artifacts from humanity's first visit to another world. On Monday (Dec. 3), the gallery will close forever. "This was one of the original galleries built for the museum in 1976," explained curator Michael Neufeld, during a tour of "Apollo to the Moon" streamed live on Facebook from the Smithsonian's National Air and Space Museum in Washington, D.C. on Friday (Nov. 30). "It has many key artifacts that are great...