There was a time when a scientist would have realized that if his solution required negative mass, it was literal nonsense.
Today you get millions in grant money for it.
I need to understand the implications of negative mass further to accept this theory. The main problem is that negative mass matter would be able to exceed the speed of light based on Einstein’s special relativity equations and we have never observed any such phenomena. Violating the light constant velocity would also undermine the core concept of causality between fundamental particles and forces in the universe. Break out the hyperdrives and time machines. I’ll wait for the confirmation before I get too attached to this idea.