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I’ve been posting sporadically on how sunspots are starting to come back to the Sun, and I’m glad to see a new group sprouted up recently… and it’s a monster: These images are from SOHO, the Solar and Heliospheric Observatory. The orange one is in visible light, and the sunspots are pretty obvious. The green one [...]
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This combined image from Nov. 8-9, 2012, shows the sun's innermost atmosphere as seen by the Solar Dynamics Observatory (SDO) inside a larger image provided by the Solar and Heliospheric Observatory (SOHO). A coronal mass ejection c... Read Post

The Sun is at it again: Active Region 1520, a vast sunspot group, is currently blemishing the Sun’s face. This Solar Dynamics Observatory image shows the sunspot cluster on the lower right. A quick measurement shows the group is abo... Read Post

Astronomers who count sunspots have announced that 2008 is now the "blankest year" of the Space Age. An image taken on Sept. 27, 2008 by the Solar and Heliospheric Observatory (SOHO) shows a solar disk completely unmarked by sunspot... Read Post