HOUSTON, March 18 (UPI) -- Earth isn't the only planet that features the occasional light show high in its upper atmosphere. According to data captured by the NASA probe MAVEN, Mars featured a five-day-long aurora late last year.
Dubbed "Christmas lights," the onslaught of electromagnetic activity lit up the Martian atmosphere for nearly a week in the run up to December 25. The aurora was detected by MAVEN's Imaging Ultraviolet Spectrograph (IUVS). The light show spread across Mars' northern hemisphere -- much as the Northern Lights do on Earth.