Maybe we should be looking up © Amazing Aerial Agency/Offset by Shutterstock

When it first flicked on the projector lights in 1930, the Adler Planetarium in Chicago was the only one in the Western Hemisphere, and it featured an innovative new lens imported from Germany. But the American public"s fascination with stars and distant worlds, it turned out, was skyrocketing. By 1934, the Adler had welcomed over a million visitors.