Since the detection of gravitational waves we know for sure that black holes do exist. To understand what really goes on inside them we need a new theory.

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.

A quick introduction to the monsters that lurk at the centre of each galaxy.

Find out what gravitational waves will tell us about the Universe: from understanding its birth to figuring out whether black holes have hairs.

How does LIGO detect gravitational waves? Here is a quick introduction.

Here we present a worked example of a distributed system in action, to illustrate Leslie Lamport's rules of ordering history using logical clocks.

My view of the events taking place on my computer is very different to how a computer scientist, a engineer or a physicist would view what is happening inside the box. Leslie Lamport explains how the definition of an event distinguishes between these areas of research.