What is gravity ‘made of’?

Might our universe – as vast as it is – be simply one of many? We look at the growing evidence that there’s more than one cosmos out there

It’s difficult to know for sure how many electrons are in the Universe. British physicist Arthur Eddington (1882–1944) came up with a number in 1938, now known as the ‘Eddington number’. Eddington’s c

GLOBAL EYE

GLOBAL EYE

Imagine you’re in a woodland, with sunlight filtering through the endless green canopy overhead. There’s uniqueness everywhere. Some trees grow bolt upright, but others are wizened and twisted. Here t

Isaac Newton, who must be one of the cleverest individuals ever to have lived, made groundbreaking contributions to physics, mathematics, mechanics, philosophy and astronomy. The laws of motion, the t