Re: Exo Astronomy..
"...the most useless industry/profession on planet earth"
...and yet, the technology and research investment into optics, stabilisation, image enhancement, machine learning techniques and probably many others are all benefiting from it. Sometimes, it's not the end research that produces the best results for humanity as a whole, but the technology and techniques developed along the way, things that may or may not have been done without the targetted research project. Sometimes it's just bringing people from different disciplines together who might not have otherwise met and combining their knowledge. War tends to accelerate technological advancement, but I'd rather we got it from "blue sky projects" than more war.