This podcast featuring Paul Davies, a theoretical physicist and cosmologist at Arizona State University and Director of BEYOND: Centre for Fundamental Concepts in Science, explores this difficult question and accompanies our What is time article.
Could there be more than three?
A possible way of resolving the greatest problem of physics.
On the seventh day of advent we venture to a dark place we will never return from
Open door #1 and scroll through our changing understanding of gravity...
Would you like to get away from Earth? Here's how fast you would need to go.
A quick introduction to one of the greatest discoveries of the century.
A quick introduction to the monsters that lurk at the centre of each galaxy.