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Look to the stars! – a quick quiz Quiz

by David, 26 September 2018 | 2 comments

Black lightning bolt in purple circle

Feeling bright? This quiz has a couple of star questions that are bound to bend your brain.

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Microscope: Sleepy sunshine News

by David, 12 April 2017 | 0 comments

Double Helix magazine is looking for your science questions! Our Microscope column answers the thorniest science queries you can throw at us. Email us at Helix.Editor@csiro.au or via our contact details below and you could have your question published. Here’s a sample question to get you thinking. Aisha Goshti asks: Why does the Sun makes…

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Jet lagged sunflowers

by David, 22 November 2016 | 0 comments

If you’ve ever flown overseas, you might have experienced jetlag. For example, daytime in London is night in Sydney, so your body can get very confused on a journey between the two. But jetlag isn’t just a human phenomenon, or even just an animal phenomenon. Turns out sunflowers can get jet lag too!

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Where on Earth am I? Activity

by David, 2 March 2016 | 0 comments

NOTE: This activity is written for people in the southern hemisphere. Northern hemisphere mathematicians can still do this activity, but they will need to swap north and south. You will need Long, straight stick (a broom handle is perfect) 1 metre string Plasticine Compass Tape measure Pair of compasses Pens, ruler, A3 paper (or two…

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How bright is the Sun? Activity

by David, 7 October 2014 | 0 comments

You will need Lamp and extension cord Paper Vegetable oil Rag or paper towel Ruler or tape measure Pen and paper to do some calculations on What to do Pour a small amount of vegetable oil onto a sheet of paper, and then wipe it off. You will end up with a semi-transparent oil stain…

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Aurora origins News

by Pat, 8 November 2013 | 0 comments

Aurora over a winter landscape.

On a dark night, far from the Equator, you might be lucky enough to spot an aurora: a shimmering, colourful glow in the sky. This natural light show has captivated people for thousands of years. While it is mostly associated with cold, dark nights near the poles, auroras have a much brighter, warmer origin: the…

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Microscope: Rainbow weight News

by Mike, 5 September 2013 | 0 comments

Stylised picture of a rainbow on a set of scales

Welcome to Double Helix magazine’s Q&A section – Microscope. We take a close look at small questions full of big ideas. Q: What is the weight of a rainbow?

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Hot hot heat Activity

by Jasmine, 19 December 2012 | 0 comments

A cardboard box obscured by a pot plant.

Phew! The Sun can feel pretty hot, even though we’re millions of kilometres away on Earth. Find out more about how plants can keep buildings cool in this activity.

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Solar spiral optimises power News

by David, 14 August 2012 | 0 comments

Sunflower

Imagine a flat spiral, similar to a snail’s shell, coming closer and closer to a point. Now imagine more spiral lines, all centred on the same point. This shape looks like the clouds over a cyclone, or a whirling galaxy.

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