general relativity

Everyone knows what time is. We can practically feel it ticking away, marching on in the same direction with horrifying regularity. Time has enslaved the Western world and become our most precious commodity. Turn it over to the physicists however, and it begins to morph, twist and even crumble away. So what is time exactly?

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.

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Cosmology has an ambitious goal: to understand the Universe in its entirety. Find out more here.

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Straddling the boundary between pure and applied mathematics.

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Find out about the heroic effort that led to the detection of gravitational waves and the excitement of their discovery.

A quick introduction to one of the greatest discoveries of the century.