220px-Saturn Storm

The great white spot.

The Great White Spot on Saturn, named by analogy from Jupiter's Great Red Spot, is a name given to storms that are large enough to be visible by telescope from earth by their characteristic white appearance.   

The phenomenon is somewhat periodic:

  • 1876 first observations by Asaph Hall. He used the white spots to determine the planet's period of rotation.
  • 1903 Edward Barnard
  • 1933 Until recent times the most celebrated. Made by Will Hay, comic actor and amateur astronomer.
  • 1960 JH Botham (South Africa)
  • 1990 Stuart Wilbert
  • 2006 Erick Bondoux, Jean-Luc Dauvergne