Get the facts on this planet of extremes. Orbiting the Sun at a distance of 4.5 billion kilometres - more than 30 times further out than the Earth - Neptune is a dark, icy world. Receiving just one ...

on March 13 that year the planet Uranus was discovered by William Herschel, and by the beginning of year of the discovery of Neptune five minbrfuanets had been found. In all these instances ...