Stephen Crothers (among several other professional mathematicians) explains, in great detail, why it is a nonsense.
I know what you are going to say Kipper, gravity doesn't exist. This is why it's pointless getting into this with you. You are fully signed up to the cult of electric universe, despite the models having failed when they have been tested.
This one? Stephen J. Crothers (born 1957) is a handyman/gardener and part-time amateur scientist. Lolz dude
Gravity does exist. Although, as Stephen Crothers explains, Einstein actually removed gravity from his theory. The question is, what is gravity? The Thunderbolts Project hypothesize that it is electrical in nature. What do you think it is, Pix, using your expert knowledge of Newton and Einstein?
Crothers is a conman who has no academic credentials of any note. None of his work is peer reviewed and he has an honorary doctorate from a fake university set up by his friend.
He flunked out of his PhD for the same reason that Wal Thornhill flunked out of his physics degree. Peer review, for people who come up with powerful arguments that discredit "established" cosmology? What planet are you on?
Anywaaay.... One in every five adults believe that aliens are hiding in our planet disguised as humans. I'm one