What modulates our Sun? The majority of science work on the principle that the Sun is self modulating and each solar cycle is a product of a random number generator. There are others that suspect the Sun is modulated by the planets with a special emphasis on Uranus & Neptune. Thanks to Carl Smith who has recently left us we have new knowledge that significantly adds to Jose, Landscheidt & Charvàtovà's work.

Geoff Sharp

Will SC24 be the Shortest Cycle in the SSN Record?

The monthly average for July 2016 is 10.8 confirming the trajectory of the activity slide occurring over the past 30 months or so. If the trend continues SC24 will be judged overall as lower than the first cycle of the Dalton Minimum (SC5) occurring in the early 1800's along with one of the shortest cycles in the sunspot record (see SC5/SC24 comparison graph below).

Many thanks go to Carl's brother Dave for providing the Domain, Server and Software.