Swarm observatory helps discover Steve's 'long-lost twin'
Ever since aurora chasers discovered Steve, a mysterious ribbon of purple light in the night sky, scientists have wondered whether it might have a secret twin. Now, thanks to a photographer's keen eye, and data from ESA's Swarm satellites, we may...
Gabriel Arne Hofstra Arctic University Of Norway University Of Electro European Space Agency Swedish Institute Of Space Physics Swarm Mission
Source: sott.net