Scientists using the Imaging Ultraviolet Spectrograph (IUVS) instrument on NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft have observed a bright ultraviolet auroral glow spanning the northern hemisphere of the Red Planet. Martian aurora is similar to Earth’s Aurora borealis but has a different origin. Image credit: University of Colorado. “What’s especially surprising about the aurora we saw is how deep in the atmosphere...
