From Scientific American / Reuters:
"Scientists at the European Organization for Nuclear Research (CERN) started up a huge particle-smashing machine on Wednesday, aiming to re-enact the conditions of the "Big Bang" that created the universe.
The Large Hadron Collider (LHC) is the largest and most complex machine ever made and the platform for what experts say is the largest scientific experiment in human history.
Tests conducted inside the tightly-sealed chamber, buried under the Swiss-French border, could unlock the remaining secrets of modern physics and answer questions about the universe and its origins.
The 10 billion Swiss franc ($9 billion) machine's debut came as a blip on a screen in CERN's control room, with a particle beam the size of a human hair appearing in the tightly-sealed 27-km (17-mile) circular tunnel..."
*** The ring has a 27km (17-mile) circumference and is located 100 meters underground.
There are also some beautiful pictures at this site: http://www.boston.com/bigpicture/2008/08/the_large_hadron_collider.html
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