The problem is of course.
@Justatruthseeker was exactly right
Dark Matter is the name for a repair to a model, pending "explanation" - which for want of doubt is not explanation at all, it actually means "repairing the broken model" with somethign that fits all observations.
When the model is finally repaired, is just as likely that the repair will come by repairing the mass matter axiomatic relationship' or the underlying cosmology equations as it will to repairing the quantity of matter. ( the dark matter conjecture)
Not least because no evidence has been found that "mass" can be attributed to any new axiomatic species of non interacting particle existing in empty space to fix the problem. It is all just conjecture like abiogenesis is just conjecture.
And before you begin an unscientific rant.
Relativity was just such a change to the model that did not add more matter. It added mass to the matter. It redefined the axiomatic mass matter relationship , so things have more mass when faster -( in addition to rewriting the rest of cosmology because the model didnt work)
Its just a model. It is not even unique. Dont confuse it with the universe, an alltogether stranger beast.
It is BECAUSE we understand the state of cosmology Justatruthseeker and I say what we do.
Start thinking of science as a voice recognition package. As a model of speech. It never becomes the speaker. Or the listener. It has only the limited vocabulary you put into it.
If all you put in is four words, it will think you said one of them, or conclude its discriminator just cannot tell between. It cannot answer word "God" unless you put it in the package - nothing to do with whether God is real or not. So if "God" is not one of its four words, it will never say it in answer to any question!
So when science "explains" something it is just the same : it is answering your question "what is this" by saying..gravity ...or electric field ...or electron . Because those are all you put in. It can only answer in terms of the axiomatic species you put in. If "God" is not put in the model, it will never say "God" as an answer - so in that sense deny God exists - regardless of whether He exists!
Trouble is , sometimes it makes a pigs ear. The equations work with some observations better than others. . You ask how heavy is "this" . And for far off galazy rotation It answers in mass, FAR more or less than other phenomena say. It comes to different conclusions In short its sums dont add up. you call the difference "dark matter" but all it is is an error.
Sooner or later you have to mess with the model, to make it all add up. Then it will "explain" ( with a non explanation in philosophical terms) by telling you what you already know because you put the error correction in! Dont confuse that with the universe. It is what it is. Even when the equations of a bad model dont add up. The universe does what it is seen to do. Or not sometimes. So the model will get fixed, and it is just as possible mass/matter will re revisited, or the cosmological equations, as it is, that mass will be added with or without new axiomatic species of field or particle.. Just like relativity did.
Just like our voice recognition package.You mess with it, add a few words, mess with the recognition. And abracadabra it now has five words it can discrimanate instead of four. And it will say "God" but only if you put "God" it in. Nothing to do with Gods existence whether it says "God" or not.. It never becomes the speaker, just by recognising all the words. It is just a model of language!
Science will never become the univere. It too is just a model - it will ony give out what you put in, so is not an explanation at all.
Trouble is they dont teach schools philosophy of science.
High time they did, so others like Subjunction get a grounding in what science can and cannot tell them. Which is why people confuse a concept in a model "dark matter" with reality.
Nnope, wrong again. Just like in evoulution, you cannot refute that which you do not understand. Drop the strawman and try to find out what you are arguing against.