A Cometary 'Aurora' (IMAGE) ESO Caption The "old tails" from Comet McNaught observed in the evening of Jan. 17, from Paranal, when the comet had just set. The outcome resembles an aurora. Credit ESO Usage Restrictions Editors of newspapers and bona-fide science magazines and journals (including popular science magazines) may use these pictures without any reproduction charge, but reference must be always be given to ESO -- e.g., by the line 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.