totally random, but i was just raiding CERN's image archive for more pics of the LHC & I saw the source image for the second image in the stamp. its a simulated Higgs Boson at the CMS detector: [link]
actually I wouldn't be considered a partner in science or anything. i'm just randomly got obsessed with the LHC and related things last year after I had the most random idea to have the LHC involved in my NaNoWriMo.
I've seen the full picture of the 2nd pic. but I don't recall where.