This volume contains the invited papers presented at the NATO Advanced Research Workshop on the Theory of Sunspots, held in Cambridge, England, 22-27 September

In 1912 Victor Franz Hess made the revolutionary discovery that ionizing radiation is incident upon the Earth from outer space. He showed with ground-based and

Galileo’s telescopic discoveries, and especially his observation of sunspots, caused great debate in an age when the heavens were thought to be perfect and un

Leading experts present the current state of knowledge of the subject of magnetoconvection from the viewpoint of applied mathematics.

The margravial court astronomer Simon Marius, was involved in all of the new observations made with the recently invented telescope in the early part of the sev