Neutrinos are a type of particle that pass through just about everything in their path from even the most distant regions of the universe. The Earth is constantly bombarded by billions of neutrinos, which zip right through the entire globe, houses, animals, people – everything.
Neutrinos are subatomic particles produced by the decay of radioactive elements and are elementary particles that lack an electric charge, or, as Nobel Prize winning physicist Frederick Reines would say, “…the most tiny quantity of reality ever imagined by a human being”.
IceCube is comprised of a cubic kilometer of ice, which is densely packed with optical modules. The detector is located deep below the surface — it starts 1½ km below the ice and ends at the bottom at a depth of 2½ km. The instruments in the detector are comprised of 86 cables each with 60 digital Optical Modules (extremely sensitive light sensors).
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