I spoke with an Irishman in San Francisco many years ago, and he told me of how he and a friend went to an event at the planetarium where there was a computer-generated 3-D visual display that gave the viewer the impression of flying through space.
I have been to something similar at the planetarium in Armagh. It’s quite an experience. However, the Irish dude in San Fran had smoked quite a bit of strong weed before the show. The music soundtrack for the display was Pink Floyd. He said it all blew his fucking mind. Perhaps he went back up there and never came home…