The universe is a hologram and everything you can see - including this article and the device you are reading it on - is a mere projection. This is according to a controversial model proposed in 1997 by theoretical physicist Juan Maldacena.Until now the bizarre theory had never been tested, but recent mathematical models suggest that the mind-boggling principle could be true.Professor Maldacena's model suggests that the universe exists in nine dimensions of space and one of time.Now Japanese researchers have attempted to tackle this problem by providing mathematical evidence that the holographic principle might be correct, according to a...