Pretty much right on the mark for those definitions. A physiologist is basically a person that studies the human body and how it works. (Just studying the body is anatomy). So, things like the respiratory system, immune system, cardiovascular system, muscles, etc. etc. So, what we study is how each of these systems work, and how each of them interacts with the other.
An astrophysicist (spelling it right this time), is a person that studies space. We look at the mathematical principals behind orbits, planet formation and star formation. We also study planetary surfaces, geology, vulcanism, and the possibility of life on other planets elsewhere in the solar system/galaxy/universe.
Hope that answered you question!
This post goes farther, and farther and farther away from anything KQIX related! What have I started!
