William Sheehan

'Mercury'

Bog | Engelsk

The last of the five naked-eye planets discovered in ancient times, Mercury has long been an elusive, enigmatic world. As seen from the Earth, it never emerges far from the Sun, and astronomers in the telescopic era found it challenging to work out such b

'Saturn'

Bog | Engelsk

Saturn is the showcase of the Solar System. It may not be the largest of the planets, nor the smallest, nor even the only planet with rings. But it is among the most stunningly beautiful objects in the sky, and is always breathtaking when seen in a telesc