Hi skipzoid,
I am in a similar position training wise although have not yet attempted the met exam. I am at the moment reading the materials (AFE Set). Like you I saw no reference in the book to this question however in the AFE Q&A simplifier (example paper 2 - met) there is indeed a question very similar to the one you pose.
The answer they give as correct is flying towards the moon will give the best visibility.
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although the debate is mostly subjective, rather than scientifically measured, many experienced pilots believe that at night, visibility is best when looking directly towards the moon than in any other direction.
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I am not qualified to question this answer myself but it is what is given as the correct answer within the Q&A simplifier.
PS That book is well worth getting.
Hope that helps and good luck.
OldBadger
Last edited by OldBadger; 31st Dec 2010 at 12:41.
Reason: Error correction in text