aurora
Different auroral colors stem from emission by different atmospheric gases. On Earth, the northern and hemisphere versions are known as aurora borealis and aurora australis, respectively. Aurorae change in brightness, shape, color, dynamics, and location in response to changes in the state of the magnetosphere. This variability shows up most dramatically during an auroral substorm. Related category ATMOSPHERIC PHENOMENA AND STRUCTURES Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |