Propulsion research is a critical field that aims to develop and optimize propulsion systems for air, water, and space travel. Researchers in this field work to improve the efficiency, performance, and sustainability of propulsion systems, and to explore new propulsion technologies that could enable breakthroughs in space exploration. Propulsion research involves a range of disciplines, including mechanical engineering, materials science, and fluid dynamics. Advances in propulsion research have led to the development of highly efficient and powerful rocket engines, as well as alternative propulsion technologies such as ion thrusters and solar sails.