I could tell them everything they need to know about "dark matter(TM)" right now without all the hassle and expense; the stuff basically doesn't exist, other than in the minds of people locked into bad science paradigms.
I have always thought that most of theoretical physics is nothing more than science fiction with an endowment. I may be slow but I do not understand how scientist can create fields of math to solve the imaginary problems they put forth.
Are you a physicist?
Do you have an explanation for the mass-matter discrepancy in galaxies?