In 2018, a new aurora-like discovery struck the world. From 2015 to 2016, citizen scientists reported 30 instances of a purple ribbon in the sky, with a green picket fence structure underneath. Now named STEVE, or Strong Thermal Emission Velocity Enhancement, this phenomenon is still new to scientists, who are working to understand all its details. What they do know is that STEVE is not a normal aurora—some think maybe it’s not an aurora at all—and a new finding about the formation of streaks within the structure brings scientists one step closer to solving the mystery.
Source:
https://phys.org/news/2020-11-aurora-chasing-citizen-scientists-feature-steve.html