What is a scientific theory?

A scientific theory is a well-tested explanation of observations and results that has been substantiated by a significant body of evidence through repeated experimentation and validation. Theories are built upon a framework of established facts and multiple tested hypotheses that have been confirmed over time. This distinguishes them from other concepts like guesses or unverified statements, which lack the rigorous testing and evidence required to be classified as a theory.

In science, theories seek to explain the underlying mechanisms of phenomena in the natural world and predict future occurrences based on those principles. One of the key aspects of a scientific theory is its ability to remain adaptable; as new data emerges, theories can be refined or revised to better fit the growing body of evidence. Therefore, the strength of a scientific theory lies in its extensive testing and endorsement by the scientific community, rather than being a mere speculation or assumption.