Yes, science is based on theory. Theories in science are comprehensive explanations that are supported by a substantial body of evidence and have withstood rigorous testing and scrutiny. They are the most well-established and widely accepted explanations for natural phenomena.
Scientific theories are not mere guesses or speculations. They are constructed based on observations, experiments, and logical reasoning. Theories provide frameworks that help scientists organize and understand the available evidence, make predictions about future observations or experiments, and guide further research.
In science, theories are subject to continuous testing and refinement. New evidence can lead to modifications or even revisions of existing theories. However, this does not diminish the importance or validity of well-established scientific theories. They remain the foundation of scientific knowledge and serve as reliable explanations until new evidence or a more comprehensive theory emerges.
It is important to note that the term "theory" in scientific context differs from its colloquial usage, where it can mean a tentative guess or hypothesis. In science, theories are the highest level of understanding and represent the most well-substantiated explanations we have. Examples of well-known scientific theories include the theory of evolution, the theory of relativity, and the atomic theory.