Super-Kamiokande Gets an Upgrade to Detect Neutrinos from Ancient Supernovae
Buried 1-kilometer underground near the city of Hida, Japan, is a 40-meter tall cylinder filled with 50 million liters of water—the Super-Kamiokande neutrino observatory. Since 1996, it has been observing neutrinos—subatomic particles—from solar, extrasolar, terrestrial and artificial sources with highly sensitive optical sensors which record minute flashes of light that...





