For decades, string theory has promised to be the ultimate explanation for how our universe works. In this theory, all matter ...

The Big Bang may mark an end—not the start—of a previous universe's aeon. Penrose's theory sees the universe as an eternal ...

The arrow of time can teach us more about how the universe began – and how it will end, says quantum columnist Karmela ...

A new quantum recipe for black holes could be the first step toward a theory of "quantum gravity", the "holy grail" of ...