What a sunspot show it was. The huge group, AR 2673, visible with the naked eye, produced an X9.3 flare on September 6th, the most powerful recorded since 2005. For the next few days, it quieted down ...
The loop-like structure is taller than 10 Earths stacked on top of each other. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.
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