How to become an Astrophysicist?

Hi. maulik Astronomy is the science which deals with the study of heavenly bodies. It considers (a) their motions, both real and apparent, and the laws which govern those motions; (b) their forms, dimensions, masses, and surface features; (c) their nature, constitution, and physical condition; (d)

4th semester in class 12th? You can apply for indian institute of astrophysics or tifr