Our friends over at the Associated Press have dug deep into a story that’s weighing heavily on all of our minds today: Why is it that the National Air and Space Museum, once the proud champion of the Smithsonian’s annual Awesomest Awards for Attendance, has fallen from favor with the museum-attending set. Air and Space’s attendance fell below that of the Smithsonian’s National Museum of Natural History for the first time in recent memory last…