A hypothesis is literally just a detailed guess at something that is testable through science. You have to be able to point at some data when you make that guess, but it's still just a guess. "Some data" could just mean data from a single test. It has just as much detail as a theory, it just has not "stood the test of time" yet

A theory is what you get once you have a hypothesis that has been around a while and despite numerous attempts to disprove it, has not been disproven, yet has also not been proven. So much so to the point where science generally recognizes it as truth, as if it were fact, except that they keep it in the back of their mind (or at least they should) that it is not actually a proven fact.