# Articles

Double counting proves a neat result in graph theory.

Can physics do for maths what maths has done for physics?

A quick tour to some of Hawking's most significant achievements.

*dark matter*. But if it's invisible how do they know it's there?

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

Since he Universe is all there is, there's nothing for it to expand into. So what does "expansion" mean?

Some of the Universe's most important secrets are hidden in the shape of a beautiful undulating curve: the power spectrum of the cosmic microwave spectrum. This article explains how.

To understand the why the cosmic microwave background tells us so much about the Universe, you first need to understand what created it: sound waves travelling through the early Universe.

Cambridge mathematicians and physicists remember their most famous colleague with fondness.

The cosmic microwave background is the earliest light we can see in the Universe. So important is this baby picture of the Universe, it's been involved in two Nobel Prizes. Why?