Well, my first niche was where Astronomy and Physics find themselves crushed by the Paranormal Psuedo-science of UFOlogy.
And I've always been a little Mars ...um,... obsessed.
I think there's a whole lot to discover about its history.
And I wrote an amazingly weird paper talking about the Hidden History of Mars way back when I was in school (in..the 90's! -gasp!-), and I was invited to present my paper, later the first I'd ever publish, at a University a few States away, where these three KIDS (Freshmen) in the front row laughed and made jokes the whole time. My favorite was the kid who put pens in his hair like antenae. I had to take a moment to stop laughing from that one. C
So after my presentation. The kids came up and told me that I was "absolutely mad." And a nickname was born. Not quite "MarsMadness" but one wishes to be moderately protected while slumming it with you people.
Also, I'd met my first spouse as well. True story.