A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. 

But this doesn't always mean that we observe an aspect of the natural world and explain it through scientific theory. 

Quite often, we look at a scientific theory that has successfully explained some aspects of the natural world and then make predictions on how some other aspects of the natural world ought to be, and only later on observe it to be the case. 

Like we did with several elements on the periodic table, and with Black holes. 

Our intuition and feelings are not dissimilar. 

While we can often explain our intuition and feelings based on the facts that we have encountered, quite often, we experience them first and then look backwards to see what facts and experiences may have shaped them.