Rocket science is the term used to describe the study of the design, manufacture, structure and behavior of rockets or spacecraft. A rocket scientist is usually someone who has studied and earned an aerospace engineering degree. To earn such a degree, a person has to learn a lot about physics, chemistry, aerodynamics, propulsion, communications and mathematics.
Rocket science work can involve the “design and testing of rocket-propelled vehicles, such as orbiting spacecraft or missiles”. It can also involve “a particular component of spacecraft, such as acoustics, aerodynamics, propulsion or guidance systems”.