Started in late 1998, the space-alien hunt has recruited the owners of 2.5 million PCs, tapping their machines' idle processing time to search small chunks of radio telescope data for patterns that might signal intelligent life elsewhere in the cosmos.

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And just when we all think that we are going to get an el clasico final Bayern Munich knocks out Real Madrid on a penalty kick decider while Chelsea overcome everything except alien forces to beat Barcelona 3-2 on aggregate.

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Half-Life 2 revisits Gordon Freeman and gives him an alien occupation to fight off and a gravity gun to help him with the dirty work.

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