Improve Your Communication Skills
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
How Much Sleep Do Kids Need?
Julianne Robertson investigates the world of snoozes, forty winks, cat naps and snoring. What is SLEEP, why do we need it, and how much sleep do kids need?
A couple of nights ago I was feeling really, really tired, so I went to bed early. I slept soundly, without even dreaming, until about 5am, when I woke up. It felt like I’d only been sleeping for about 5 minutes! After that, I fell back to sleep but had lots of vivid dreams and when I woke up a couple of hours later, it felt like I’d been asleep for a long time. After all that I still felt well-rested and was ready for the day.
All this made me wonder – what IS sleep? Why is it that some nights we feel like we’ve had a really good nights’ sleep, while other nights we still feel tired when we wake up in the morning? Here’s what I’ve discovered about sleep…
My Favourite (Favorite) Book
Writer Susannah Leigh was born in Canada and moved to UK when she was eight years old. Jump! asked her about her favourite children’s book.
One of the nicest things about being an author (apart from being able to go to work in your pyjamas) is being invited to talk about books in schools. I love chatting to enthusiastic pupils about all things bookish. Usually the questions I am asked are ones I can answer easily.
‘How long does it take you write a book?’
‘Where do you get your ideas from?’
‘When did you write your first book?’
But at a school last week a student asked: ‘What is your favourite book?’
Now that’s a tough one.
I’ve read so many good books, how could I possibly choose my favourite?
And what if I haven’t read my favourite book yet? Indeed, what if it hasn’t even been written?
A Homemade School
Dr Lesley Beeton visited South Africa and visited a school to find out what it’s like to go to school in South Africa.
This is the Drakensberg in South Africa. In English, it means ‘Dragon Mountain’. The children in this part of South Africa face a daily commute to school. In the area where I was staying, the nearest town was Bergville. With the windy roads through the mountains, this journey can take almost an hour. School starts early too, at eight o’clock, so that means getting up around 6 am to be ready for the taxi.
What is Home Education Really Like?
My name is Alys. I’m nearly thirteen years old. I’ve been home educated since I was nine, but before I went to a Montessori school I was home educated.