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.
What is dark energy and how do we know it's there?
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?
Cosmology has an ambitious goal: to understand the Universe in its entirety. Find out more here.
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.