Mysterious Fast Filaments (IMAGE) University of Cologne Caption The mysterious fast filaments as seen on the nightside upper clouds of Venus with the instrument VIRTIS onboard Venus Express. Credit ESA, S. Naito (Acamon), R. Hueso (UPV/EHU) and J. Peralta (JAXA) 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.