There was a time when humans believed that everything revolved around the Earth. The sun, the moon, the stars, all orbiting dutifully around us like very obedient wedding guests. Then along came Nicolaus Copernicus, and he really upset the apple cart by pointing out that, actually, we’re not the centre of the universe at all. Which, if you think about it, is both humbling and slightly inconvenient. Ever since the Copernican Revolution, we’ve had to accept that we are just one