Wow, man, that's some talent you've got going on there!
I thought it was very good - I've been a space exploration freak since I was a kid, and recognised the Voyager probe straight away from your artwork. Reminds me a little of Douglas Adams' sense of humour too - right up my street.
Too esoteric? I wouldn't worry about that. A small, but appreciative, audience is much preferable to going for the "lowest common denominator" and watering your work down. You might get more fans that way - but then are they really appreciating you as an artist or just because you fit their idea of a genre? I love it when artists find the profundity or humour in my special interests.
If you have any other work available to peek at on-line, I'd love to see it.
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When you are fighting an invisible monster, first throw a bucket of paint over it.