"300km (190 miles) above the surface of the Earth and found the temperature of the air was 3,000C (5,400F) hotter inside the gas stream than outside it.
Inside, the 25km-wide ribbon of gas was flowing at 6 km/s (13,000mph), 600 times faster than the air on either side.
Relatively little else is known about the big purple light as yet but it appears it is not an aurora as it does not stem from the interaction of solar particles with the Earth's magnetic field."
