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

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

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

Earth exists in a bubble. Our atmosphere forms a protective barrier between everything on the planet’s surface and the near-empty vastness of space. But it’s not the only bubble Earth sits inside. Bey