It is the time of life where things start to happen. I've "wished" most of my life, now I am "doing".
This is the result of combining three hobbies, flying, astronomy and geology. Astro-geology is a new science (started in the 1950's).
One of my favourite quotes (from a geologist) -
"Geologists are astronomers as well, but we can only study one planet at the present time".