Science, Nature and Tech

Is The Great Wall of China Visible from Space?

The idea that the Great Wall of China can be seen from space has been around since at least 1938 and is still popular today. It certainly seems plausible that such a large, linear structure would stand out from the surrounding landscape, but it’s actually not true.

Alan Bean, the fourth man to walk on the moon, said in 1969

“The only thing you can see from the moon is a beautiful sphere, mostly white, some blue and patches of yellow, and every once in a while some green vegetation. No man-made object is visible at this scale.”

But if you can’t see the Wall from the moon, how about somewhere closer to Earth? The International Space Station (ISS) maintains a low earth orbit of between 330-435 km above our planet’s surface.

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Art & History

Who Was Christina of Denmark?

You may have heard her referred to as ‘The One Who Got Away’ from Henry VIII, but who was Christina of Denmark? Historian Lucy Allen explains.

 

“If I had two heads, one should be at the King of England’s disposal!”

 

Most of the time, when someone claims that a king or queen made a clever quip, it turns out to be made up, but the line Christina of Denmark supposedly used to reply to Henry VIII’s proposal of marriage is more likely to be true than most.

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Science, Nature and Tech

Water and Engineering – Water, Wonderful Life

water and engineering

Dr Lesley Beeton is a scientist, who studies what the DNA code tells us about human life and health. She has always loved science, and believes that science doesn’t just happen in laboratories. It happens all around us. Science keeps aeroplanes flying, electricity flowing, and the internet speedy.
Dr Beeton  grew up in South Africa. Some of you may have traveled there for your holidays, to see the game reserves or Table Mountain. But even if you haven’t been there, we can all still learn something from the experiences of southern Africa.

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Language & Literature

Should Kids be Taught the International Phonetic Alphabet?

Have you ever flicked through a dictionary to find a word, and then noticed that right next to it there is a set of symbols, some of which resemble the letters you are used to using, but some of which are completely different?

These symbols are there to give you a guide to how the word is generally pronounced, and they are part of the International Phonetic Alphabet, or IPA.

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