Celestial Navigation – Where is the Sun?

A couple of years ago, myself and a group of friends were on a tiny island called Pitt Island in the middle of the South Pacific Ocean. We got up really early, and climbed up the top of a mountain to watch the sunrise. With the island’s 11 residents still fast asleep in the village…

Celestial Navigation – The Celestial Sphere

Once upon a time people thought that the earth was the centre of the universe and that the sun and stars all revolved around us (sounds a bit like one of my ex-boyfriends). These ancient people started mapping the sun and the stars on to a sphere – the Celestial Sphere – basically it is…