I have worked in that field, however, what I do for a living now is spacecraft/satellite engineering, design, control, and operations.
I', impressed. As a layman, I have always been interested in cosmology, deep space astromony and astrophysics and read the popular books on the subject. I haven't got the math background to get into the technical material - just had one semester of Calculus in undergradute school.
I have worked in that field, .....
===============================================
And I always assumed you just played one on television.....
;-)