Massive sunspot AR3664 triggers powerful coronal mass ejections, potentially causing auroras in states like Montana, North Dakota, and Michigan.
Unusually active sunspot AR3664, seven times the size of Earth, is causing powerful coronal mass ejections, leading to aurora borealis forecasts farther south than usual, potentially visible in states like Montana, North Dakota, and Michigan. The aurora is expected to be most active between 10 pm and 2 am local time on Friday, due to strong magnetic fields. Sunspot AR3664 is currently 124,000 miles wide and is visible from Earth using protective equipment.
May 09, 2024
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