Bad news for the owners of solar ‘scopes?

October Sky at Night magazine has an article entitled “Our Sun could be heading for a slump”.

It references this article:

http://www.sciencedirect.com/science/article/pii/S0273117717303381

It says “Grand Minima (GM)” develop in clusters, with a separation of about 400–600 years between individual GM.

It predicts that next grand solar minimum may occur in about 2090 plus or minus 20 so we might have a bit of time yet – – – 

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