[Jamestown1630]

For something that can’t exist, NASA, DARPA, MIT, the Air Force and others have shown an odd interest in it:

https://interestingengineering.com/science/nasa-darpa-mit-debate-anti-gravity-tech

https://thedebrief.org/scientists-have-solved-this-anti-gravity-mystery-while-confirming-new-form-of-magnetic-levitation/

[Chad_the_Impaler]

First of all, magnetic levitation is not anti-gravity. Second, there is a lot of crap research done at NASA, DARPA, and the Air Force. MIT and Harvard being listed there is a surprise, but I suspect those scientists (if they are real) are attending to talk about speculative propulsion systems, not anti-gravity.

Anti-gravity is not consistent with general relativity.