Dark Matter
Dark matter does not exist. Neither do dark energy.
They are just science’s tweaked fantasies in an effort to make their fairytale theory about the Big Bang to check out.
expanding. It has the size it has either it’s infinite or not. It's larger than we will ever be able to measure. There is no need for dark matter and dark energy to influence what happens gravitationally nor other vice. Though it’s likely that happenings in our universe are sometimes influenced by powers making their ways through from other dimensions.
There are likely other major forces in action besides gravitation. And by the way there ar NO gravitational
waves like Einstein made up in his mind. The claimed assertions that science have registered some,
is due to twisted minds and constructional errors.