Did the Vatican suppress hidden 'Galileo Cryptogram'?

An Australian boffin says that the planet Neptune may have actually been discovered 234 years earlier than had been thought, by the famed Renaissance Italian astronomer and scientist Galileo Galilei - who was persecuted by the Inquisition for his "heretical" astronomy research. Professor David Jamieson of Melbourne Uni says that proof for this theory may lie within a hidden coded message yet to be discovered.