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.
Great Women You Should Know: Joan Whittington
You might know about the very important work the Red Cross does all over the world to help people in a crisis. Wherever there is war or natural disaster, their familiar symbol can be seen on flags above makeshift hospitals and parcels of emergency food supplies.
You probably know less, though, about the brave and generous individuals who dedicate their lives to the Red Cross. These people work tirelessly to help those in need and seek no recognition for what they do, but recently we came across the story of a real-life heroine that more people need to know about.
How to Be an Inventor
Have you ever thought ‘There MUST be an easier way to do this’? If you have, you are not alone. People around the world invent and re-invent products all the time. Some of them are professional, and inventing is part of their job. Others are just normal people who had a bright idea.
There are many clubs and societies which you can join and learn to invent or develop your curiosity and talent for science and invention. All inventors start somewhere, and most of them start when they are very young. Young people have the best imaginations so if there is something you think is a good idea and you want to try and create, why not join up with other young creative people and work together.
Alice Gives Advice – Written By You
Alice M is 10 years old, and has some great advice on being a girl
The Joy about being a girl is you get more opportunities because people mostly trust girls better than boys. I know that it majorly sexist but technically that is what happens in life.
We all know that girls have to go through a HARD time when they are older but it is sometimes worth it, GIRLS are the ones that actually produce the baby, GIRLS are the ones who have super fashion sense and are the ones who are unique with any kind of style Goth, jumpy, and get have any personality they want to and we wear make-up to make ourselves look nice, scary, horrible anything you want, we can style hair, have fun and mess around.
Some people don’t like being girls mostly because their scared, I am too, but if you think about it there generally is nothing to be afraid of. You have people all along the way to help you enter adulthood and become bigger and better, people will help you when it is hard and when you need constant monitoring but after all that has passed, I will guarantee that you will have had the time of your LIFE being a girl.
So what I am trying to say is: enjoy being a girl, enjoy having horrid things done to you (I know that sounds backwards but trust me, it I’ll be worth it) because when that is all over you’ll miss it.