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Some of you might find this article interesting. It deals with the building of a particle accelerator is space. Able to accelerate electrons at or faster than the speed of light.
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It also explains space~time Relativity in a really brief history of the universe in one web page. Its quite clear even for a layman. Two pages altogether.
http://danieljackson.pbwiki.com/f/Building_A_Stargate.htm (http://danieljackson.pbwiki.com/f/Building_A_Stargate.htm)