The cosmological constant problem

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

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

GLOBAL EYE

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

Many people say to me: “Whenever I look at the stars, it makes me feel so small and insignificant; it scares me.” It’s true – from one perspective, we are but a minute speck of dust on a tiny pebble,

GLOBAL EYE