Hi I'm 27 years old, and planning to return to university as a mature student to study physics/astrophysics as major. I have gone through websites, reading materials, articles, and I have not found any satisfactory answers for the job descriptions of an astrophysicist. So what to expect to be an actual astrophysicist ?(Usually some people daydream of finding a new planet, or discovering a new thing and getting world famous in a single day, but I would like to know how the job would be in reality). My second question is 'Is it possible for a mature student/non traditional student to become a researcher in physics or astrophysics?'. And the next question is 'Can people find jobs in astrophysics field by completing masters degree without doing Phd?' I am thinking of studying upto master's, then find a job on the same topic, and would be doing a Phd as a part time. And my last question is 'What is the difference between astrophysicist, theoretical astrophysicist and cosmologist, and what are their job nature?'. I can tell that I have the scientific curiosity, I enjoy science and my interest is in science so I want to be realistic, to achieve this dream. I dont want this to pursue this as a hobby, but to follow this as my career. I am not complaining, but most of the people I met indirectly discourage my idea of pursuing my studies. Please clarify my chances.