How does assumptions differ from Scientific Theory?

Assumptions are basic premises or ideas accepted as true without proof, often serving as the foundation for further reasoning or investigation. In contrast, a scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of evidence gathered through observation and experimentation. While assumptions may guide hypotheses, scientific theories are rigorously tested and refined based on empirical data. Thus, assumptions are often unverified starting points, whereas scientific theories are validated frameworks that explain and predict phenomena.