Posted 12/11/2018 08:32 (#7163689 - in reply to #7163475) Subject: RE: Sun Activity
North of London
I think the records of sunspot activity go back even further from studying tree rings (there is a big scientific name for that) they have a record of sunspot activity going back thousands of years. Not as good as observations no doubt but it has been shown to be a very consistent happening.
Sun Activity
