STEM stands for:
and refers to all the subjects that fall under these four umbrella categories...
There are three main branches of science. These are natural, social and formal.
Natural science includes: Physical sciences like physics, mechanics, electromagnetics, thermodynamics, kinetics, chemistry, inorganic chemistry, electrochemistry, analytical chemistry. Life sciences like anatomy, botany, biology, zoology, neurobiology, marine biology, embryology, ecology, palaeontology, genetics, cell biology and ethology. Earth sciences like astronomy, meteorology, geology, atmospheric sciences, glaciology, climatology, structural geology.
Social science includes: anthropology, history, archaeology, human geography, economics, law, development studies, education, criminology, political science, translation studies, media studies, business and management, philosophy, health, international relations, linguistics, cultural studies, sociology, psychology.
Formal science includes: mathematics, logic, computer science, data science, statistics, systems science, artificial intelligence, information technology and so on.
the branch of science which deals with celestial objects, space, and the physical universe as a whole