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The Indian Princess Suffragette – Sophia Duleep Singh
You’ve probably heard of the Suffragettes, who fought for women’s rights, but did you know that an Indian princess was one of the leading campaigners in England?
Science News – Solar Storms Due to Hit Earth
This weekend the Earth is due to be hit by a pair of solar storms that might affect radio and satellite communication. But how and why does this happen?
What Does Solar Mean?
Anything that is related to a sun is commonly described as being solar. Our sun is a typical medium-sized yellow star which is about 5 billion years old. Its surface temperature is about 5,500°C, but even that isn’t as hot as its superheated centre. Some parts of the sun’s surface are cooler, with a temperature of between 2,700–4,200°C, and these appear darker when viewed through specialised telescopes. These cooler patches are caused by fluctuations in the sun’s magnetism and are called sun spots.
Winter Wonderings – Are Snowflakes Really All Different?
It’s a common belief that no two snowflakes are the same, and in a way this is true. No snowflake can ever be completely identical to another, because when you get down to the molecular level they will have slightly different kinds of water molecules, different electrons and different traces of other materials such as specks of dust.
However, if we’re talking only about the appearance and shape of a snowflake, then yes it is possible that some will have duplicates. Snow crystals can vary from fairly simple, hexagonal structures to the more complex and delicate shapes that we commonly think of as snowflakes.
The simple flakes have far fewer molecules than their larger cousins and so it’s entirely possible that you could find two that appeared identical when viewed through a microscope. The more complex structures, however, can have more than a hundred different features and each feature can form in a number of different ways. This makes it highly unlikely that you would ever find two large snowflakes that looked the same – but you could have fun trying!
For a more detailed explanation of the science behind the forming of snowflakes, check out this video
Unsung Heroes – Lollipop Men and Women
Is there a Lollipop Man or Woman on your road to school? Do you know his or her name?
When I take my children to school, we walk if we can, because the parking situation near the school is a bit difficult. On our way we cross the road where the Lollipop Man stands guard.
He isn’t particularly talkative, but is friendly and helpful. It has been warm these past days, and still he stands, in his reflective jacket and ear-muffed reflective hat. I am waiting for him to take the hat off, he must be sweltering under there. Perhaps he has a lighter hat in his cupboard, which doesn’t get worn until summer.
What is the Orionid Meteor Shower?
This October Earth will be passing through the tail of Halley’s comet, which will mean a shower of meteors flashing across the night sky. Our science editor Sam Gouldson explains.
What is Halley’s Comet?
A comet is a lump of rocky particles, ice and dust all bound together like a dirty snowball. When the comet nears a star, its surface transforms from a solid to a gas. The star’s light shines through these gases and makes them visible to observers as a fuzzy cloud around the comet’s centre, and a tail streaming out behind.