Spacetime crystal could be a reality

Spacetime crystal could be a reality -- Science & Technology -- Sott.net: "Remember when we said that Doctor Who fans eager to build their own TARDIS would first need to obtain an odd little item called a trachoid time crystal? The exotic item was first mentioned in a 1976 episode called "The Hand of Fear" as being key to the machine's ability to travel through space and time. Nobel Prize-winning physicist Frank Wilczek (MIT) suggested such a thing might be mathematically possible, giving hope to aspiring Time Lords everywhere."