http://news.bbc.co.uk/1/hi/sci/tech/6411991.stm
Skywatchers eagerly awaiting Saturday's total lunar eclipse say that the spectacle could be the "best in years".
The eclipse begins at 2018 GMT, with the Moon totally immersed in the shadow of the Earth between 2244 and 2358 GMT.
During "totality", only light that has been filtered through the Earth's atmosphere reaches the Moon's surface, making it appear a reddish colour.
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Keep an eye out!