Our cover picture ...
shows the noctilucent clouds on 24 to 25 June 2005 in Hamburg. Photo by Hartwig Lüthen. A highly compressed version (500 kB) of an animation of this NLC night can be downloaded at <link
www.gva-hamburg.de/nlc/nlc.avi - external-link-new-window>http://www.gva-hamburg.de/nlc/nlc.avi</link>.
