Mars appears to have a strange plume rising above it, and scientists don’t know what’s responsible for it or what it means. The haze was first noticed in 2012 and evidently stretches for more than 1,000 kilometers. "We know in this region on Mars there have been auroras reported before. But the intensities we are reporting are much, much higher than any auroras seen before on Mars or on Earth,” Dr. Antonio Garcia Munoz at the European Space Agency told the BBC. Such a strong aura could “mean our understanding of Mars' upper atmosphere is wrong,” writes the BBC.