WHO'S STEVE?

Scientists are still trying to understand a mysterious purple light phenomenon known as STEVE. STEVE is a natural light show that was previously unknown to science and was initially mistaken for a proton arc. The cause of STEVE's purple light and the picket fence of green stripes that sometimes accompanies it are still puzzles. Recent photos have also shown a connection between STEVE and another non-aurora light show called a stable auroral red arc. Understanding STEVE could have practical applications, as its presence can affect satellite signals. [Extracted from the article]