Nice one, Don. A lot of festivals and clubs went that way. If you mention that you don't like it, people just say"Well start one yourself and see how you do".And there's really no answer, is there?
I like your galaxy story, but at least that was only a TV programme, where you don't expect much scholarship. The Science Editor of the Guardian, which is reckoned to be the UK's most intellectual paper, recently wrote an article in which the word "physician" was used to mean a person who studied physics. The science editor of a major newspaper! Of course, words just mean what people use them to mean etc etc