You must have a four year Bachelor’s Degree in Science before you can gaze into the heavens and get paid for it. You will need courses in astrophysics or physics. Taking some chemistry and biology courses will help you along also. To be an astronomer, you will need to have plenty of patience and curiosity. You should be able to conquer mathematics and have the ability to pay attention to close details. An astronomer should have a big imagination and be able to stand back and reflect in contemplating study. An astronomer is basically a great thinker!