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Interesting read! https://t.co/r8z7abFULc
Interesting read! https://t.co/r8z7abFULc
Recent #SolarPhysics paper: A Curious History of Sunspot Penumbrae: An Update https://t.co/TgvsVFhpOj
RT @egu_st: Solar Physics: A Curious History of Sunspot Penumbrae: An Update: Abstract The ratio of penumbral to umbral area of sunspots is…
RT @AstroPHYPapers: A Curious History of Sunspot Penumbrae: An Update. https://t.co/UmB9R418Qf