Remember that recent triumphant announcement from NASA that they’d captured evidential proof of the existence of dark matter? Well, not everyone agrees with them. Indeed, there are anumber of scientists who are advocates of alternative theories of gravity, and one of them believes that the gravitational lensing used to spot the ‘dark matter moment’ may have produced the illusion of it occuring. At least this is a slightly weightier argument than the Pluto issue, eh?