A Michigan-based photographer captured an unexpected scene on Monday night, September 5, showing an aurora-like group of glowing lines.
The band is caused by a phenomenon known as STEVE, a rare type of atmospheric radiation similar to the aurora that can be triggered when a stream of solar plasma interacts with Earth’s atmosphere and magnetosphere.
#Picture for the day: Michigan-based photographer Isaac Diener captured this stunning image of Strong Thermal Emission Rate Enhancement (STEVE), an unusual form of aurora borealis, on September 5th, on the Keweenaw Peninsula in Upper Michigan. https://t.co/MXhOiKX2tMpic.twitter.com/Vg7Np2oABn
— SPACE.com (@SPACEdotcom) September 7, 2022
STEVE stands for Strong Thermal Emission Rate Development.
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First described by Canadian skywatchers in 2016, Steve can occur far from the poles and is less common than the aurora borealis.
Photographer Isaac Diner of Upper Michigan’s Keowenaw Peninsula revealed on Monday, September 5, that the “Steve” phenomenon was the second he had seen clearly in the past seven years since he began observing the aurora borealis.
“You never know when that will happen. It just comes out,” Diener told Space.com in an email.
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Diener said he used the same equipment and settings to track the “Steve” phenomenon that he used to take photos of the aurora borealis.
The northern lights were seen from various locations in the northern United States, including Canada and Yellowstone National Park, last night, according to Space Weather.
The current image of the aurora is augmented by a coronal mass ejection, a wave of charged particles ejected by the star on Friday, September 2, from the region of the sun’s upper atmosphere known as the corona. The interaction of matter from the Sun with Earth’s magnetic field triggers a moderate geomagnetic storm that is fueled by increased solar wind flow from an opening in the Sun’s magnetic field.
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