What type of evidence is considered proven in scientific terms?

In scientific terms, a fact is considered proven evidence because it is based on empirical data that can be consistently observed and verified through repeated experimentation. Facts are objective statements about the world that are accepted as true based on evidence collected through systematic observation and experimentation. For instance, the boiling point of water at standard atmospheric pressure is a fact that can be tested and confirmed.

Hypotheses, on the other hand, are educated guesses or predictions that require testing and cannot be considered proven until they have undergone rigorous investigation. Opinions are subjective beliefs that may not have any basis in scientific evidence and can vary from person to person. Theories are well-substantiated explanations based on a body of evidence, but they are not considered proven in the same way as a straightforward fact because they encompass broader principles that can still be tested and refined over time.