Physicists are quietly testing an audacious idea: that the mass of everything around us might not come from an invisible ...

In 1919, physicist Theodor Kaluza hypothesized that extra dimensions might solve some outstanding problems in physics. And while we haven't found any evidence yet for anything outside our normal ...

Among DC's hundreds of powerful villains, one extradimensional entity stands out as a dangerous threat that often chooses not to be destructive. DC Comics features a wide variety of villainous species ...