The Sky at Night · S27 E5
1983-05-08
A mile below the Black Hills of Dakota lies a huge tank of cleaning fluid deep inside a gold mine - the world's strangest observatory. It is designed to collect neutrinos sent out by the sun. But what do we really know about the sun? Some of our long-cherished theories seem to be wrong. Patrick Moore visits this unusual observatory and talks to Drs Raymond Davis and Keith Rowley about the results of their work.