Researchers always want to keep learning more! There are researchers in any field of science! You can do research in physics, biology, chemistry math, computer programming, and any other field that you can think of. Research can be applied or basic. Applied research aims at solving an existing scientific problem, while basic research is done for the sake of increasing knowledge or understanding scientific phenomena. To be a researcher in any field, a doctorate in that field is usually required.
Read about women who are researchers:
Ann Hornschemeier Cardiff
Denise Erin Moon