In the history of space exploration, there have been many leaps for humankind. From the foremost experts at the Smithsonian's National Air and Space Museum, here is a complete visual narrative of our journey from Earth to the stars. . . . Although the momentous October 4, 1957, launch of Sputnik 1 was not the beginning of humanity's adventure toward space--our curiosity about the skies has been one of the few constants in history--it was the first...