No matter what topic we discuss, to represent the complication and sophistication of the subject we resort to one word – Rocket Science.
However, Rocket science is a colloquial term for aerospace engineering. And, Aerospace Engineering deals with the design and development of new technologies in aviation, space, and defense systems. Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is similar, but deals with the electronics side of aerospace engineering.
Long story short, Rocket Science is not really a Rocket Science, it is Aerospace Engineering.