This morning's beautiful 'mother of pearl' clouds (perlemorskyer)

I awoke early this morning, and I'm glad I did, because otherwise I would have missed these incredibly rare clouds of many colors! These clouds are called 'perlemorskyer' in Norwegian, and that translates to 'mother of pearl' clouds in English. The scientific name for them is polar stratospheric clouds; they are a very rare sight to see. That is because they occur in the stratosphere layer of the atmosphere (very high up, between 49,000 and 82,000 feet up according to Wikipedia). You can read more about their formation here: Nacreous clouds | International Cloud Atlas

I managed to get some good photos before the light from the sunrise dissipated the colors. Enjoy!