Astronomy is the science of studying stars.
That's part of the field of Astronomy.
The science of studying weather is called meteorology.
Archeology.
Human Anatomy
Geology
Geology
Astronomy.
Cosmology. The definition is the study of the universe.
If I am not Mistaken I believe they are called climatologist.
The science of studying the Universe and it's workings is known as Astrophysics. I'm not exactly sure what you mean by "physical" science but there is a wide variety of different scientific disciplines involved in Astrophysics.
The field of science that studies dinosaurs is called "paleontology."
acoustics