Although the moon is a crescent, it looks like a full moon, due to the long exposure of the photo. In the photo, it is accompanied by a planet and some stars. Mount Athos can be seen in the background.
<a href="//commons.wikimedia.org/wiki/User:Annatsach" title="User:Annatsach">Annatsach</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>