However in winter the Northern Hemisphere is tilted away from the Sun giving us shorter days and cooler weather.

BBC: Why the Moon is getting further away from Earth

Facing tough budget decisions at home over the "fiscal cliff" it was essential for the US to avoid the impression that it was giving away more cash at this time.

BBC: Science & Environment

During the 10 days that we're on we never know when we're going to work it can be anytime night or day so during that period of time our social life can be non-existent but it does have the advantage of giving us a week off every 3 weeks which means we can go away.

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