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Science, Nature and Tech

What is Juno?

There has been a lot of excitement about the Juno probe this week, but what is it and what is its mission?

What is Juno?

Juno is a spacecraft designed and operated by NASA, the US space agency. It was launched from Cape Canaveral on the 5th August 2011 and has taken almost 5 years to travel the 716 million kilometres to Jupiter, the largest planet in our solar system. Juno is 3.5 metres in height, and when its solar arrays are extended it’s more than 20 metres across. These arrays are covered in more than 18,500 solar cells, which allows Juno to operate even when it’s at such a great distance from the Sun.

(Image: NASA)

Why is it called Juno?

In Roman mythology Juno was the Queen of the gods. She was married to the king, Jupiter, who wasn’t always well-behaved. Juno had to peer through the clouds to discover what he was up to; the spacecraft is called Juno because it will be looking beneath the clouds that cover the surface of the planet Jupiter.

Aboard the Juno craft are 3 models of Lego minifigures: Jupiter, Juno and Galileo, who discovered in 1610 that Jupiter had moons.

From left to right: Galileo, Juno and Jupiter. (Image: NASA/JPL-Caltech/LEGO).

What is it looking for?

Jupiter is enormous; it’s two and a half times larger than all the other planets in our solar system combined. It’s made entirely of gases and is believed to have no solid surface. The planet rotates at an immense speed, completing one rotation every ten hours, and telescopes have shown us that it has a cloudy atmosphere with colourful spots and stripes. The largest of these, known as the Great Red Spot, is a storm that is several times the size of Earth and has been raging for more than 300 years.

Jupiter. The Great Red Spot is clearly visible. (Image: NASA).

This mission is the first time that humans will be able to glimpse what lies beneath Jupiter’s cloudy atmosphere. The main objective is to understand how the planet formed and evolved, which will give us more information about the formation of gas giants as well as the rest of the solar system. Juno will also measure the quantities of water and ammonia within the atmosphere, examine the magnetic field that surrounds the planet, observe any polar auroras and measure the gravity to see whether a solid core may exist after all.

For more information about the Juno mission you can watch this video from Nasa, and have a look at the Juno mission webpage.

Art & History, Popular

Early English Writing – Runes and the Futhorc

Did you know that English hasn’t always been written using the alphabet that we know today? There have been several changes in the way we write over the centuries. We shall start by looking at the runic script. You may already have heard of runes, and perhaps you know that the term refers to some form of writing. We’ll look at runes and the early English alphabet called Futhorc.

Runic Script

First of all, what are runes? Contrary to what legend and hazy modern stories may tell us, runes are not magical, and they are not an exclusive part of an ancient Celtic religion or only associated with druids. Neither are they symbols of the mysterious or spiritual. It is very simple. Runes are letters.

Runic script is a system of writing that is surprisingly close to what we use today in its concept: runes are the letters in a set of alphabets (sometimes called ‘runic alphabets’). These alphabets were used to write Germanic languages. Not simply German as we know it today, but other languages in the same family. This means that it includes English. In fact, the earliest form of writing for English was runic.

The very early form of English that evolved from a language we call Proto-Germanic, which we believe gave rise to many other languages such as German, Dutch, Swedish and others, is known by the term Old English and sometimes also Anglo-Saxon. The second term reflects the names of the Germanic tribes which are believed to have formed the main group of speakers that arrived on the British Isles to displace Celtic languages. It is this early form of English, Old English, which was written in runes.

The Futhorc or Fuþorc

The version of runes used to write Old English is known as the Futhorc. It was developed from the older system of runes used to write other, earlier West Germanic languages, known as the Futhark (fuþark). This Futhark consisted of 24 runes, and the early English speakers found it necessary to expand that and add extra runes to reflect the changes in pronunciation, or the sounds that gradually became part of the language.

They started by adding two extra runes, and this gradually increased until the Futhorc consisted of as many as 33 runes, or letters. You may be thinking that this is rather a lot – but then consider that our modern alphabet uses combinations of more than one letter in order to represent one sound, such as ‘th’ or ‘sh’ and so on. The Futhorc has a separate letter, the thorn þ, to represent ‘th’.

Now, in modern English, we use the Latin alphabet with a few modifications to write our language. The Latin alphabet was first adapted from the Etruscan alphabet, which was in turn derived from the Greek alphabet, and this is where we get its name from.

We call it ‘alphabet’ from the first two letters, A and B, which in Greek are alpha and beta: alphabet. So what about this ancient runic system? Where does the name ‘futhorc’ come from?

There is nothing mysterious about it. It is not an arcane word with some sort of symbolic meaning requiring years of study to understand. When we break it down, it is the same idea as the alphabet. The name ‘futhorc’ derives, or comes from, the first six letters of the runic alphabet. These are feoh (F), ur (U), thorn (TH), os (O), rad (R) and cen (C); FUTHORC, as you can see.

It is essentially the same concept as the alphabet that we use today: each rune, or letter, was used to represent a phoneme, or sound, the basic building blocks of our words.

The Futhorc was used for several centuries to write down English, and for a while when the Latin alphabet was first used for English, the two were both in use at the same time. You can even see some early monuments which have both systems of writing side by side!

Runes were used from around the fifth century to the ninth or tenth centuries in English, although the Germanic Futhark is much older than that.

In our next post, we’ll take a look at the Latin Alphabet, and tell you where you can go to take a look at RL examples of the Futhorc and the Latin Alphabet.

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Art & History

The Invention of the Piano

Would it surprise you to know that the piano that was invented 1709 is quite similar to the pianos being sold today? Despite huge leaps in technology over the past couple of centuries, the basic function of the piano haven’t actually changed much. We take a look back in time at the invention of the piano.

Home, Health & Style

What Makes a Family?

What does the word ‘family’ mean to you? It can mean many things in our society. Some define family as a mother, a father and one or more children. For others, there don’t need to be children in the home for there to be a family. Where there are children, about three quarters of the parents will be married to each other.

In 2013 the Office of National Statistics, which is a government body which takes surveys on all manner of topics to help the government make policy (rules under which we all live), found that there were 18.2 million people living in this type of family. Many more of us have families which have a different make-up. For the purpose of the survey, a family is defined as people living in the same household.

However, as many of you will know, there are other ways in which we describe our family. There are children who have two parents of the same gender, there are children who have only one parent with whom they live, other children have guardians and live with aunts, uncles or grandparents.

Science, Nature and Tech

A Kid-Friendly Explanation of The Big Bang & An Amazing New Discovery by Scientists

Most scientists believe that the Universe began in a Big Bang around 14 billion years ago. The entire Universe was inside a bubble thousands of times smaller than a pinhead, and was hotter and denser than anything we can imagine.

When the explosion called the Big Bang happened, the Universe as we know it was born. In a fraction of a second, the Universe grew from smaller than a single atom to larger than a galaxy. It kept on growing, and is still expanding today.

Now researchers in America think they have found traces left in the sky that prove this that the Big Bang did really happen. It takes the form of a distinctive twist in the oldest light detectable with telescopes. These twists of light are called ‘gravitational waves’ – the effect is a little bit like how waves form on the surface when you drop a big stone in a pond. However, you also have to imagine that the Big Bang formed the pond itself.

The team leading the project, known as BICEP2, has been using a telescope at the South Pole to make detailed observations of a small patch of sky. The aim was to find evidence of ‘inflation’ – the idea that the cosmos grew rapidly in its first trillionth, or trillionth of a trillionth of a second – growing from something unimaginably small to something about the size of a marble.

The leader of the team, Prof John Kovac of the Harvard-Smithsonian Center for Astrophysics said:

“This is opening a window on what we believe to be a new regime of physics – the physics of what happened in the first unbelievably tiny fraction of a second in the Universe.”

Over the coming years, scientists will work hard to investigate every aspect of this discovery. Other experiments will be carried out to see if they can replicate the findings of the American team. If this research is confirmed, it will be one of the greatest scientific discoveries of our time.

EDIT

Dr Sarah Bearchell drew our attention to this video, which explains the concept of gravity and gravitational waves with the help of a towel, an apple and a ping pong ball. Check it out