A Trip to Mars!
Imagine being able to catch a flight to Mars as easily as we travel to another country – that was the idea behind the Trip To Mars session I attended at the Cheltenham Science Festival. It was conducted by Dr Suze Kundu and Dr Simon Foster and presented as a pre-flight safety briefing, with both of them dressed as pilots! There were a lot of humorous moments and sci-fi references but also some great science.
Suze and Simon suggested that in the future, flights to Mars could be far quicker than they are now, and explored how some of the bigger problems could be overcome. For example, the Sun’s magnetic field deflects a significant proportion of the cosmic radiation that could be harmful to humans on Earth; as spaceships travel further away from the Earth and Sun they will have less protection because the magnetic field weakens. To combat this it’s possible that spaceships will contain or be covered with large and powerful magnets, to produce the same deflective effect. This would have the added advantage of also deflecting radiation from solar flares.
Spaceships journeying to Mars would travel at such speed that even tiny fragments of rock and dust could be damaging to the hull. To combat this, and also the heat generated when the spaceship passes through an atmosphere, Suze and Simon discussed the possibility of spaceships being coated in aerogel. This amazing material is a solid formed from silicone dioxide but is 98% air; this means that it is extremely light but also strong. Its melting point is 1,200°C (equivalent to asbestos) and it is a wonderful insulator. Because it consists of large pockets of air between thin layers of silicone dioxide, any dust or rock fragments that hit it would be slowed and stopped before they could penetrate the aerogel completely.
Suze and Simon also discussed the possibilities and problems with cryostasis. Theoretically this is when a person’s body is cooled to temperatures so low that they enter hibernation, ideal for long journeys through space. Unfortunately our technology isn’t advanced enough to do this at the moment; any attempt would result in the cells rupturing and the person dying. But in the future it will be possible, perhaps after the person’s DNA has been altered slightly so that they can produce antifreeze proteins like some species of wasps and turtles.
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?
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.
Life in an English Village
When we think of a country, we often think of a stereotype – an oversimplified image or idea. These are some country stereotypes – can you guess which countries we are meaning here?
Stereotype 2
Stereotype 1
Sometimes a stereotype is used in a negative way, but often we use them because they are the only things we know about the country we are talking about. They are often based on a truth about the country and can be a part of life in that country.
An English Village is today’s topic. When you search for an image of ‘English Village’ you might find something like this
English Village