4% matter: 23% dark matter: 73% dark energy: The Universe

This is what the universe actually consists of.

So, matter as we know it in Galaxies is only 4% of the totality of our universe

I personally don't think Dark Matter and dark energy are good names for these unknowns.

However, it might be important to know that "Dark" only means "unknown" and nothing else.

So, it is like saying "Unknown matter and Unknown energy.

But, even then Unknown matter is likely not matter because it does not exist in time and space (at least as we know it to be).

However, "Unknown energy is likely not a bad name for Dark energy which is 73% of the universe.

It is said that the universe was once smaller than the head of a pin and expanded outward from there.

However, to most human beings this doesn't make any sense at all, at least common sense.

But, likely this is true anyway.