Steve: the newest phenomenon in the sky

In a collaboration worth noting, citizen scientists and the European Space Agency came together to identify a new phenomenon in the sky called ‘Steve’. Steve is different from other auroral phenomenon in the fact that it is a vertical streak as compared to horizontal streaks by other auroras. The Alberta Aurora Chasers is a facebook group with citizen researchers who track the skies looking for Auroras. They exclusively track the sky in Alberta which is in northern Canada. Steve, found by the AAC forms a distinct purplish or greenish vertical streak in the night sky.

Auroras

Auroras are one of the most interesting features to look for in the night sky and their formation is also quite interesting. They are usually formed when the charged particles which are generated by the sun hit the earth’s atmosphere. These charged particles are drawn to the Earth’s North or South Pole. At the poles, these charged particles collide with the neutral particles and produce flashes of light. This phenomenon is known as auroras. One of the most famous auroras is the Aurora Borealis formed at the North Pole. Photographers who follow strange new phenomenon like Steve had first concluded that this was because of protons hitting the atmosphere. This was later disproved because the normal auroras are cause by electrons while protons would only diffuse visible light. Steve would have to be formed because of different reasons.

Researcher Eric Donovan from the University of Calgary, Canada first heard of Steve when talking to members of the Alberta Aurora Chasers. Eric coordinated with the Alberta Aurora Chasers and compared their data with data from Swarm. Swarm satellites are property of the European Space Agency and they study the Earth’s magnetic field.  Using data from swarm and ground based cameras which monitor the sky; Donovan was able to study Steve.

Steve

How Innovation made a difference with Steve

Steve’s discovery is path breaking because it shows the amount of technology in place today. This was a discovery which was made possible because of the citizen researchers and photographers. Steve has been documented using scientific methods like swarm and this makes the discovery more interesting. This is because phenomena like these haven’t been documented using equipment like this. Eric Donovan says “It’s thanks to ground-based observations, satellites, today’s explosion of access to data and an army of citizen scientists joining forces to document it.”

In the 90’s there wasn’t enough equipment to even document the Aurora Borealis. This has changed now with tons of new innovations. Donovan also says “Back then, we would be lucky if we got one photograph a night of the aurora taken from the ground that coincides with an observation from a satellite. Now, we have many more all-sky imagers and satellite missions like Swarm, so we get more than 100 [observations] a night.”

Steve

Image Courtesy

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