>>11166982I say go for astronomy if it's your passion. And it seems you realise there are sparse career prospects. Talk to people who know the field. Literally email some astronomers, ask to meet them and ask them lots of questions. This is generally acceptable in a university context and will prove far more valuable than asking a bunch of spergs of an Indian yak farming website. Seriously. Actually do it.
I would also say just get a degree. Anything is fine. You're young. Have fun. You can always go back and obtain further qualifications if you realise wealth is important to you. Pro tip, you probably will.
I think physics and philosophy are the most valuable disciplines personally. One speaks of our incredible depth of knowledge and the other of how little we know. Then I would advise a computer systems engineering masters or something like that to make money.
You can always return to academia in your sixties to gaze at the stars and study whatever you please. It's fine being poor in your 20s but it gets increasingly miserable as you approach your 30s. Ideally, you want to have some money to throw around to travel and live the good life while you still have your youthful vitality so try find a well paid profession early on. But again it's just undergrad. Do whatever then get a postgrad in something more lucrative.