Good afternoon, Rallypoint, and welcome to a backlog edition of Astronomy Picture of the Day (APOD). The July 12th APOD is titled "Noctilucent Clouds over Paris." What are noctilucent clouds? They arecomposed of small ice crystals forming only during specific conditions in the upper atmosphere, and can become visible at sunset during late summer when illuminated by sunlight from below. As we see here. Has anyone seen noctilucent clouds? Tell us where and when in the comments.