What is depicted in this photo?

I remember seeing this in New York when I was a tiny person it really stayed with me. The New York World's Fair!! I remember seeing people with flying jet packs on their back. It looked like scuba gear but they could go in the air and fly.

Player #2342698, I was trying to remember where I saw the ionosphere it was men in black

And it was in "Men in Black!"

the fountain is absolutely gorgeous!!