Much later, but when I was a kid in the 1970’s, all the rage was talk and books about the Bermuda Triangle.
Funny story.
When I was an air traffic controller some boy scouts came to visit and one was sitting behind my scope as I was working. I was showing him landmarks like, here's Orlando, here's Bimini, here's the Bahamas.
He says, "Where's Bermuda?" "Over there," I answered. "So this is the Bermuda Triangle!" he said. I said, "Yeah, I guess it is." He paused and then asked, "Does anything well, strange, ever happen here?"
I didn't want to disappoint him, so I waited a second and said, "Well, they don't let us talk about things like that."
He seemed pretty happy.
They probably said similar things as we do about those "silly billionaires building rocket ships".