Scientists are of different fields. It depends on the type of study in a particular subject done by you. Like there are space scientists, weather scientists and many more. After achieving your goal of becoming a scientist you'll be making new researchs, you'll exploring something new. ... I think you might have heard the news that ISRO launched its GPS missile few days back. So it is also one of the works done by scientists. Some scientists make robots. It just depends from which subject you have completed your studies.