a branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws: the mathematical sciences.There are many brances of science, and different organizations recognize different numbers (or branches) as being legitimate sciences. Some of the most commonly recognized brances of science are: Behavioral and Social Science, Biochemistry, Botany, Chemistry, Computer Science, Earth and Space Science, Enginerring, Enviornmental Science, Gerontology, Math, Medicine and Health, Microbiology, Physics, and Zoology. These are only general catagories, however. Underneath all of these general brances of science are subcatagories: ie: Underneath Medicine would be Pharmacology, etc.
Science is the ongoing search for knowlegde about the universe. Typical of the proggresion in our knowledge is the level of understanding about the solar system.