Replies

To: SubMareener

How is/was sun activity measured for times before the technological era? ie. 1859

18 posted on 07/30/2015 7:46:45 AM PDT by PROCON (FReeping on CRUZ Control)

To: PROCON

Follow the link to the Wikipedia article on the 1859 flare.

32 posted on 07/30/2015 11:39:25 AM PDT by SubMareener (Save us from Quarterly Freepathons! Become a MONTHLY DONOR!)

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