Noctilucent clouds above Kühlungsborn, Germany (VIDEO) Kyushu University This video is under embargo. Please login to access this video. Caption Noctilucent clouds seen in the German city of Kühlungsborn. Its delicate and complex structure and flow indicate the presence of atmospheric gravity waves and turbulence. Credit Gerd Baumgarten/Leibniz-Institute of Atmospheric Physics Usage Restrictions Only for media and non-commercial use License Original 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.