Answer:
This is a tricky subject to answer, as you see we don't know what the limitations of science are. Science, itself, is everything, so if science cannot do something, in a way it is not real.
Scientists, nowadays, believe that we may still need to discover more than 90% of the universal building blocks. Apparently, man only knows roughly 5% of the universes secrets, so you could say the limitations today is that science is incomplete itself. One day in the distant future, however, technology will be at its peak and we will hope to discover this missing 90% and make science complete, so then there will be no limitations of science.