Vera Ruben discovered that all the star in the galaxy spin around the center at the same rate. As if all the stars ware glued to a plate. Basically, throw out the inverse square law.

And other lady worked out a formula that plots the course of Mercury with 99.999% accuracy, while Einstein was only 96%. And her formulas do not use the inverse square law.

Really sad that dark matter and black holes are even discussed.
Its like scientists are saying, just one more band-aid, and the theory will work.