The article ends with: “Few really believe that antimatter falls up, because so much existing theory predicts it will not. But in 1887 existing theory predicte

The article ends with: “Few really believe that antimatter falls up, because so much existing theory predicts it will not. But in 1887 existing theory predicted that the apparent speed of light would vary with the speed at which the observer was moving. When Albert Michelson and Edward Morley showed that it does not, they tore up the rule book of physics. It could happen again.”