Will time ever end?

Tick tock, tick tock, whenever will the clock stop…

17th June 2017
Will time ever end? (Getty)

Asked by: Terry Stanton, by email

According to Einstein’s General Relativity, which is our best current description of space and time, the only place where time – and also space – ends is in a so-called singularity. This involves gravitational forces becoming so intense that space and time lose all meaning.

Diagram of the Big Crunch
There are a few scenarios for the ultimate end of the  Universe – if it ends in a Big Crunch, then time would lose all meaning © Getty

While this is a theoretical possibility if the Universe collapses into a ‘Big Crunch’, observations suggest the current cosmic expansion will continue indefinitely. 


Get more fascinating Q&As from BBC Focus magazine by following @sciencefocusQA