Theoretical Science: these are the scientists who develop new theories and hypotheses to explain natural phenomenon. For example, in astronomy, a theoretical scientist might say “I have formulated a theory to explain how planets form. My theory predicts that the Moon is made of cheese.Scientific theories are testable and make falsifiable predictions. They describe the causes of a particular natural phenomenon and are used to explain and predict aspects of the physical universe or specific areas of inquiry (for example, electricity, chemistry, and astronomy) Scientific theories are testable and make falsifiable predictions. They describe the causes of a particular natural phenomenon and are used to explain and predict aspects of the physical universe or specific areas of inquiry Theoretical Computer Science is mathematical and abstract in spirit, but it derives its motivation from practical and everyday computation. Its aim