Giant Sunspot Turns to Face the Earth - Universe Today
[/caption] What has been billed as the largest sunspot observed in several years has now rotated around to stare straight at Earth. How large is it? Active Region 1339 and the group of sunspots adjacent to it extends more than 100,000 km from end to end and each of the several dark cores is larger … Continue reading "Giant Sunspot Turns to Face the Earth"