Super Kamiokande is one of only a few neutrino observatories in the world. It is located a kilometre underneath the Kamioka mountain in Japan and consists of a cylindrical steel tank, about 40m in diameter, filled with 50,000 tons of ultra-pure water and lined with 11,146 hand blown glass photomultiplier tubes. Photo by Andreas Gursky.
This huge but delicate device has been built to try and catch a glimpse of the countless neutrinos that travel through the Earth every moment – 50 trillion neutrinos are passing through your body every second. This strange, elementary particle has mass, travels close to the speed of light, yet can pass through matter almost unnoticed.