MARTIN Lunn has a twinkle in his eye.

The York astronomer has been studying the science behind the Star Of Bethlehem and will be discussing the latest theories at a lecture in York tonight.

Mr Lunn believes the Three Wise Men may well have been astronomers too.

That explains how they were able to follow the solar trail to a Bethlehem stable without using an A-Z.

It is, perhaps, best that they do not have to undertake a similar journey today.

Their heavenly calculations would be sent haywire by all those giant inflatable Santas.

Updated: 11:20 Tuesday, December 21, 2004