Decided the current huge sunspot regions were worthy of breaking out the old trusty Earth-ograph (Earth-ometer?) to viz their spatial scale http://pic.twitter.com/skI52TOTiT
— Karl Battams (@SungrazerComets) September 5, 2017
via Twitter https://twitter.com/SungrazerComets
September 06, 2017 at 01:37AM
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