Here are some amazing pictures taken by NASA in order to better understand the unique night-shining clouds towards the poles:

night-shining clouds

Beautiful picture I have to say nonetheless! Here’s some information so far that we know about these clouds (but please click into the site to learn more):

These mystifying clouds are called Polar Mesospheric Clouds, or PMCs, when they are viewed from space and referred to as “night-shining” clouds or Noctilucent Clouds, when viewed by observers on Earth. The clouds form in an upper layer of the Earth’s atmosphere called the mesosphere during the Northern Hemisphere’s summer season which began in mid-May and extends through the end of August and are being seen by AIM’s instruments more frequently as the season progresses. They are also seen in the high latitudes during the summer months in the Southern Hemisphere.