Originally Posted by DenoLo
The scientific communities definition of "theory" is extremely different than the layman's definition. Theories can never be "proven". Laws and theories are also two completely different things-- theories don't become laws. In a very basic sense laws describe what happens and theories explain how/why they happen.
Which is why (to expand) gravity is both a law and a theory. There is the law that two objects are attracted to one another, and the theory as to the mechanism by which that attraction occurs.
ETA: That muddying is why I edited that earlier post -- figured it would just distract. Which it did, since I was too slow w/ the old edit.