Astronomy is one form of science. There are many different areas of science. So some astronomers can be called scientists. Not all astronomers are scientists, as for some it may only be a hobby. There are different kinds of scientists that would never be involved in astronomy.
A person who studies that category is called an astronomer.
A astronomer
An Astronomer.
Astronomer.
Astronomer
astronomer
Astronomer.
An astronomer
An Astronomer is a scientist who studies the stars and planets.
An astronomer.
astronomer
It is an astronomer.