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.
Health Matters … Threadworm
In the second of a series of articles on health, pharmacist and writer Asha Fowells looks at threadworms. This may make you go ‘euuuuuw’, but it is an important thing to know about, because while threadworms are icky, they are reasonably easy to treat.
The term “parasitic infection” may make you think of intrepid explorers in rainforests and jungles, but there is one parasite that lurks much closer to home: threadworm.
How To Look At Art
Have you got a favourite painting? Mine is ‘A Portrait of the Countess Golovine’ painted by Elisabeth Vigee-Lebrun, sometime around 1797. It is, unsurprisingly, a portrait of Countess Varvara Nikolaevna Golovine, a talented musician and artist from Russia. Elisabeth and the Countess became great friends and I love the way the Countess is smiling in the portrait, with a red shawl draped around her shoulders and her dark curly hair swept up in behind a scarf. The painting belongs to the Barber Institute of Fine Arts, Birmingham, which is one of my favourite galleries.
I love going to art galleries and looking at paintings, but at first I found it quite a daunting thing to do. Have you ever been to an art gallery and not known where to start? Or heard art critics talking about symbolism, composition and form but not understood? Sometimes looking at art can sound difficult, and talking about it can be a whole other language!
But looking at art doesn’t have to be complicated. Things like symbolism, where objects in paintings are used to represent something that’s happening, like a skull symbolising death, can be important and the composition, or the way things in the painting are arranged, can tell us a lot about the artist and why the painted what they did.
When Kids Want to Learn a Musical Instrument
