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science has no limitations. we will figure it all out sooner or later >>
I assume from the above that you are in high school. That's OK, most everyone started there. If you consider science to be a formal logical system, it HAS to be incomplete. It is not the fault of the scientist or of science. It's just the way it is. You might want to read up on Kurt Godel. Here is a link for a primer.
Godel. I'm sure there is more and better out there on the web, but you can find out for yourself.
In a nutshell, any formal logical system must contain unknowable truths. An oversimplification, but accurate enough. In truth, Godel was speaking of mathematics, but this distinction is trivial, as scientists must use mathematics to describe the physical state of a system.
FYI, my background is in science. Science is merely a tool, or method, to determine that which can be known and not an end in itself. Consider particle physics. What are the smallest particles? Do I hear quarks? Well... there have been some experiments that may show a "granularity" in quarks. That suggests quarks may be made of yet smaller particles. How do you find out? Why smash them with particles of ever increasing energies. To get to the last level of reality and be sure that it is indeed "the end of the line", you would need a particle accelerator of literally infinite energy. Now is science going to produce infinite energy densities? Nope.
Also remember that everything you know about science is wrong( or at least 1/2 of it). Things that were scientifically "known"
Trains could not exceed 30 mph, because that would create a vacuum that would sufficate passengers
In the days following Maxwell a scientist said in effect that there was nothing left to know. We have found all the answers to all the interesting questions. Soon after some unexpected lines in spectra caused a cascade of events and experiments which led to the "trivial" discovery of quantum mechanics.
Last to consider- I have known and worked with a number of scientists who are highly regarded. NONE of them has ever demonstrated the belief that science can answer all questions. It simply is not an all seeing magic mirror.