Intensely Hot Gas Creates Seriously Cool Light-Show
Physicist Eric Donovan stared in surprise at the photos which Canadian amateur astronomers showed him. He saw a bright ribbon that looked like an aurora, only vertical, and immediately decided to look into the phenomenon. Satellite data revealed that the ribbon is almost 26 km wide and stretches thousands of km over Canada. It's made of ionised, (electrically charged) gas high up in the atmosphere. Incredibly, this gas can be up to 6,000 °C hot – the same temperature as in Earth’s core. Donovan is now trying to find the origin of this "hot air".