John McCann answered http://news.yahoo.com/photos/large-hadron-collider-lhc-largest-photo-204600269.html;_ylt=A86.JyElZkVVPnEAs2gPxQt.;_ylu=X3oDMTBya2cwZmh2BGNvbG8DZ3ExBHBvcwM1BHZ0aWQDBHNlYwNzcg--Nice picture and explanation.
