He is an expert in experimental psychology.

Radio astronomy plays a very important role in understanding the universe.

Infrared astronomy provides a new perspective on understanding the universe.

He is an expert in geophysics.

He is an expert in human anatomy.

He is known as an expert in criminology.

Abstract algebra is a branch of mathematics that studies algebraic structures.

He is an expert in paleoanthropology, conducting research on the origins of mankind.

He is interested in ichthyological research.

He is an expert in astrophysics.