Satellite navigation is such a vital part of day-to-day life that other countries of the world are planning to build up their own network of navigation satellites and move away from total reliance on the American system, GPS. America As mentioned in my previous post, the GPS system is operated and funded by the US government. The first… Continue reading Satellite navigation – the next ten years
Category: General
Understanding GPS: How Satellite Navigation Works
The Global Positioning System, better known as GPS, has come to affect countless aspects of our daily lives, from directing our holiday aeroplanes to enabling us to drive round an unfamiliar city without any map other than the one on our mobile phone. At the risk of making myself sound like a scary stalker, I… Continue reading Understanding GPS: How Satellite Navigation Works
The Three Phases of Twilight Explained
Updated August 2026 Watching the Sun set below the horizon and the sky gradually get darker and darker is an almost magical experience. Twilight is that time of the day, just after sunset, or just before sunrise when the Sun is below the horizon but the sky is not completely dark. It is valued by photographers… Continue reading The Three Phases of Twilight Explained
Dark Skies.
"All humans, everywhere in the world and throughout history, have looked up at the sky and wondered at it. This experience is now denied to most people, because of the background light in towns and cities. It is important to ensure that there will be somewhere in England where young people can fully enjoy a cosmic… Continue reading Dark Skies.
Why is the Sky Blue?
Explains the scientific reasons behind blue skies on Earth. It contrasts Earth's atmospheric effects with those on the Moon, where the sky appears black due to a lack of atmosphere, and Mars, where a reddish-brown hue results from iron oxide dust.
