Post-graduate!

First, I have to say that I just realized that if I want to keep studying, like another career (it is my dream to study all the others careers that I had in my mind) it will be a little hard, because now I have CAE and when I finish studying I will have to pay it. But also, I think that I am very young, and when I finally get out of this career (I expect in 5-6 years at least) I will still be young so I would really like to continue studying, in fact, I still do not see myself working in the future, I just want to keep learning things.
One of the careers I wanted to study is engineering, which area? I am not sure, maybe astronomy or chemical engineering, also I think in geology (yes, many engineerings for me). Why? It is because is the mixture of my favorite subjects (also my dad is a big influence for me in the election of this career), so I was very interested in studying this.
Other career that I wanted to study, which is a little different, is Marine Biology. Study something that relates my love for the nature and science it would be fantastic. 
The reason why I did not choose this careers as first choice will be a story for other blog, maybe.
So, I really want to study another career when I finish this. Like you can see all this careers are related with science, that is the focus in general.