(in cooperation with AstroPilot.info)
Photograph Explanation:

Noctilucent Clouds. This image was taken 4 July 2008 while on the ground near Birmingham, UK (near 52N, 001W). Bright contrasting wave features made for a spectacular sight Always take the time to use binoculars and look for fine detail that would otherwise be missed. Often details are lost near the horizon but these can be fetched out with a digital camera on a tripod. Photo: BrianWhittaker (.com) as seen on www.SpaceClouds.info.