Theta Aurora (IMAGE) University of Southampton Caption The theta aurora as seen by NASA's IMAGE satellite on Sept. 15, 2005. The green lines show latitude and longitude lines and the outlines of the continents; Australia is to the right, South America is to the left and Antarctica is in the middle. The theta aurora is seen slightly off-center, above the right-hand side of Antarctica in this orientation, its characteristic shape defined by the 'bar' connecting the auroral oval. The bright region to the left is 'day glow' (the sunlit atmosphere). Credit NASA/R. Fear et al (2014) Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.