What is an astrophyisist?

Answer 1

This is a person who is mainly studying a branch of physics called Astrophysics. They deal with an analytically model and numerical simulation at work. Due to this being a large branch of physics an astrophysicist will dip their hands in the fields of aerospace engineering, mechanics, electromagnetism, statistical mechanics, thermodynamics, quantum mechanics, relativity, nuclear and particle physics, and atomic and molecular physics

To explain it in an easy statement its a person who studies the physics of stellar phenomena.

Note: 'Astronomer' and 'Astrophysicist' can be used, pretty much, interchangeably.

Answer 2

An Astrophysicist is one who studies the universe and the planets.

Answer 3

An astrobiologist is a scientist whose speciality is astrobiology, study of the origin of life in the universe, particularly extraterrestrial life.