[floxy]

I'm assuming that the OP was referring to gravitomagnetism with general relativity that was making the rounds a while back:

https://link.springer.com/article/10.1140/epjc/s10052-021-08...

...not to be confused with the hypothesis that regular magnetism is the source of the unexplained measurements of the galactic rotation curves:

https://www.nature.com/articles/360652a0

[bjornsing]

It was the gravitomagnetism one, yes.