Polytechnic Marathon was last held in 1996.

A keen astro-philatelist, he is chairman of the Astro Space Stamp Society.

Selected bibliography

* Stars and Planets Guide. Collins (UK). . Princeton University Press (US). .
* The Monthly Sky Guide. Dover. .
* Astronomy: A Visual Guide. Dorling Kindersley. .
* Gem Stars. Collins. .
* Times Universe. Times Books. .
* Exploring Stars and Planets. Philip's. .
* Star Tales. Lutterworth. .
* Oxford Dictionary of Astronomy (ed.). Oxford University

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