In the Northern hemisphere you can use this handy technique to find the North star, or pole star, that is always almost due North. Follow the last two stars of the Big Dipper, known as the plough in the UK, to a prominent star. Handy for a navigation sanity check at night.

The North star is the star that stays fixed in those neat star trails photos with all the stars rotating in a circle as the earth turns.

In the Southern hemisphere you can use the Southern Cross and the Pointers to find South, but it's not quite as simple as in the North.

Find the North star

Sadly it turns out that there is not reliable evidence for this derivation of the word POSH, but it’s so nice I’d finished the sketchplanation before I knew it. The story went that if you were travelling by boat from Western Europe to India and the Far East by boat back in the day the rich people naturally took the best cabins. And the best cabins on the way Out, were on the Port side so you got a great view of the coast all the way around Africa. And on the way back on the Starboard site to enjoy the view once more. Et voila POSH as a synonym for rich. After much digging I had to conclude that the story was apocryphal, but it’s nice nonetheless.

POSH: Port Out Starboard Home (apocryphal)

Aligned with Earth’s axis of rotation. Appears largely fixed above the poles. The Northern Hemisphere has a Pole Star that will point you North, and the Southern hemisphere’s Pole Star will point you towards South. Handy. Also responsible for some great photography worth checking out.

Pole star