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Seven things everyone wants to know about the universe
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What would you like to know about your universe?

Careers with maths
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Andy Green is gearing up to break the land speed record in his rocket powered car Bloodhound SSC

A favourite from the archive...
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September 2009
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orbit

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The geometry says that now is the right time for a mission to Mars.

Tags: NASA : ellipse : Mars : Newton : kepler : Kepler's three laws of planetary motion : orbit : European Space Agency : perihelion : aphelion


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Images based on Lyapunov Exponent fractals are very striking. Andy Burbanks explains what Lyapunov Exponents are, what the much misunderstood phenomenon of chaos really is, and how you can iterate functions to produce marvellous images of chaos from simple mathematics.

Tags: mathematics and art : fractal : chaos : dynamical system : logistic map : iteration : error : Lyapunov Exponent : orbit : bifurcation