Dark Matter is matter that we cannot see because it doesn’t reflect light, so our sensors cannot reveal it. Dark Energy is energy in the Universe that we know must exist but cannot see and currently don’t completely understand. Recently, I was asked this question, and this is the answer I gave, maybe you can explain it better, if so, that just shows your intelligence and understanding of these concepts. Now then, here are my thoughts on this topic;
Well, as I understand it, Dark Matter, is merely the amount the equation E=MC squared is off compared to what we can measure. So, maybe the equation is wrong, or there is something else. Indeed, there is always ‘something else’ right? For instance if you count the number of cows in a field and then take that number of cows out, then there are zero cows and your equation of the finite set is neutral or zero, however there is still grass, insects, and an occasional critter living in a hole, like a gopher, field mouse, hedgehog, mole, etc. Are they dark matter?
If you don’t know what’s there, they are, once you know, you have to change the equation or add in that difference. So, the equation is slightly off, or there is ‘something else’ or ‘something elses’ there. Whatever is there that we now call dark matter – or dark energy depending on how the equation is finally balanced out, providing it is correct, it won’t be dark once we know. We also know that things can change from matter to energy and/or be in a state in between.
If our fundamental understanding is off, our equation is obviously off. Problem is we don’t know and many suspect components that are missing. Transition particles for instance, new states of matter we don’t know about. If our universe wraps around itself we might be measuring some stuff twice, thus off. We might also be missing to measure that which we cannot yet observe, or have mislabeled and erroneously measured as other than it is.
If photons have a very tiny mass, but there are so many to light up everything, maybe that is the missing issue, if light is bent around and around objects, there is much more of it than we are measuring, how much? If the universe is not expanding, but the light is moving around, it might appear to be expanding when it’s not, then the equation won’t match either. I have so many questions on all this stuff. From what I am reading and all the sub-theories, it is possible we will get to the answer soon – that is if someone hasn’t already figured it out but is not considered to be a learned physics expert so none of their papers are considered worthy, if they have written one at all.