The word 'science' came from the Latin word 'scientia' meaning knowledge. Science is a human made concept to prevent us from fooling ourselves. The ultimate aim of science is not to find a theory which explains everything (i think there is the need of an impossible aim to motivate a large community)but rather a collection of theories ; models .Basically scientific method includes TO QUESTION EVERYTHING and I think that's what caused scientific method to rise and grow within a small period of time.
'This Place ' had made a great video on the working of science.
But unfortunately we cannot find the ultimate truths with scientific method.We humans are biological organisms and therefore we have limitations in finding the reality.Our reality is limited into the data we get from our sense organs. You may argue that we have advanced machines capable of giving a higher rate of detection than our own sense organs.But don't forget that your reality is ultimately bound to your brain .So science only enables us for a better understanding of our reality itself. Reality is different for different beings.For example a cat may be seeing the same tree you saw with different colour,shape etc .
A far complex organism (if it exists) will have a different reality .
But SCIENCE IS GREAT. IT IS BEYOND A FORM OF STUDY.IT'S A CULTURE ,IT'S A WAY FOR ALL TO THINK.I JUST POINTED THE FACT THAT SCIENCE HAS TO EVOLVE INTO SOME THING NOT BOUND BY SUBJECTIVE REALITY .