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Carolin Crawford: When Galaxies Collide

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The Whirlpool Galaxy (Spiral Galaxy M51, NGC 5194) is a classic spiral galaxy located in the Canes Venatici constellation. Credit: NASA 

Published on Apr 24, 2013

There is a whole Universe of different shapes, sizes and colours of galaxies. We shall look at some of the ‘ordinary’ galaxies and then move on to consider the more peculiar systems, discussing quite how and why they came to morph into such strange shapes.