An unexpectedly strong blast from the Sun hit Mars this month, and it sparked a global aurora more than 25 times brighter than any previously seen by our MAVEN orbiter, which has been studying the Martian atmosphere's interaction with the solar wind since 2014. Learn more: http://go.nasa.gov/2yh2IdW
Posted by NASA – National Aeronautics and Space Administration on Saturday, September 30, 2017
