<P> Space science or Astronomy is the study of everything in outer space . This has sometimes been called astronomy, but recently astronomy has come to be regarded as a division of broader space science, which has grown to include other related fields, such as studying issues related to space travel and space exploration (including space medicine), space archaeology and science performed in outer space (see space research). </P> <P> Life science comprises the branches of science that involve the scientific study of living organisms, like plants, animals, and human beings . However, the study of behavior of organisms, such as practiced in ethology and psychology, is only included in as much as it involves a clearly biological aspect . While biology remains the centerpiece of life science, technological advances in molecular biology and biotechnology have led to a burgeoning of specializations and new, often interdisciplinary, fields . </P> <P> Biology is the branch of natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy . Biology is a vast subject containing many subdivisions, topics, and disciplines . </P> <P> Zoology / zoʊˈɒlədʒi /, occasionally spelled zoölogy, is the branch of science that relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct . The term is derived from Ancient Greek ζῷον (zōon, "animal") + λόγος (logos, "knowledge"). </P>

Branch of science that involves the classification of living things