In the main hall alone, were examples of some of my most cherished memories of aviation when I was a kid- the X-15 was the absolute coolest plane when I was about six. It was so different than everything else, sleek and rocket-like and black! No other plane I knew of was black. Also in the main hall is the Mercury, Friendship Seven space capsule, a fixture of my childhood, as we watched every move of the space program's development.