Explaining History – And Firing a Steam Train
Have you ever watched someone at work and wondered how they got there, or why they do what they do all day long?
Laura works as an explainer at the UK’s biggest train museum – the National Railway Museum in York. It may seem that steam trains and young women do not go together, but Laura loves it. She spoke to Joanne to explain how she became an explainer, and what she does all day.
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 UK General Election – An Explanation for Kids
Every five years, United Kingdom elects a new parliament. This is called a General Election and it’s pretty complicated. If you’ve ever wondered how a country decides who is going to run things, this is how! We asked our contributor Tina Price-Johnson to write an explanation of the General Election for kids.
When I was in Year 9, my school ran a mock general election, so we could learn how an election works. I was chosen to be the Liberal Democrat candidate, and two other students were chosen to represent the Conservative Party and the Labour Party. We didn’t have any other parties at that time!
We had to pretend we were running to be elected as a Member of Parliament (MP), and the other students in the school were the voters. We created posters and learned what each party stood for, so we could debate in front of the whole school and give our speeches. We spoke to students in the hallway, and each of us had a team of other students to help us out. This is exactly what all the candidates for MP in your local area will be doing. More or less!
How to Negotiate a Later Bedtime
