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.
The World’s Longest Loom Band
What is the longest loom band that you’ve been able to make? Perhaps you managed to make one long enough to skip with, but have you ever wondered about the world’s longest loom band?
A Short Story – The White Dove
Dad walks over to me. He’s carrying several slices of bread.
‘Hi, Grace.’
‘Hi,’ I say, giving him a look which I hope he understands means, I am so not impressed with this new pre-birthday arrangement.
Dad doesn’t seem to have noticed my look. I wonder what he’s doing with the bread.
‘For the ducks,’ he says when he catches me staring at it.
I nod and decide not to mention that I am no longer five years old and that feeding the ducks in the park doesn’t exactly excite me anymore.
‘Right,’ I say, as we head over to the pond.
‘So, Grace, how have you been?’
We sit down on the bench next to the willow tree.
What Do You Know About Africa?
What do you think of when you hear the word AFRICA?
Do you think of safaris? And villages?
You might think of drums and dancing. Or do you think of something else?
These are stereotypes of Africa, which means they are a conventional, over-simplified image or impression of the country.