Aupmanyav
Be your own guru
As mentioned in my previous post, there is evidence for what science generally calls as 'Dark Matter'. If Dr. Tyson does not like the name, he can suggest some other. When science comes to know more about it, it will give it a better name.If Dark Matter is a placeholder name, there is no evidence for it, because, you made up a name for something, for which you have not a clue what it is.
As Neil DeGrasse Tyson put it... not in these words. Dark Matter is a lousy name, since no one knows that it is actually matter.
That's like being awake and experiencing something, and not knowing what it is, but you call it a demon.
The problem with demons is that only some theists experience it (not all), and no atheists.