1Aerospace engineering has broken into two major and overlapping branches: aeronautical engineering and astronautical engineering. The former deals with craft that stay within Earth's atmosphere, and the latter deals with craft that operate outside of Earth's atmosphere. While "aeronautical" was the original term, the broader "aerospace" has superseded it in usage, as flight technology advanced to include craft operating in outer space.[1] Aerospace engineering is often informally called rocket science.
1Astrophysics (lang-el: Astro - meaning "stare", and lang-el: physis – φÏσις meaning "nature") is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, and chemical composition) of celestial objects such as galaxies, stars, planets, exoplanets, and the interstellar medium, as well as their interactions.Astrophysics is astronomy and physics. Unlike the other two it is not
engineering but the study of cosmology.
It is a very broad subject.
