Ever hear the term 'golden hour' or 'magic hour' in photography? It is caused by the fact that sunlight has to travel through more of the atmosphere during sunrise and sunset, because of its low angle. Atmospheric molecules scatter more of the shorter wavelengths of light (blues/violets) before they reach us, leaving only the longer yellow/red wavelengths to shine through. These molecules also act as a giant diffuser creating much softer, almost indirect, light. This particular sunset was taken on Orcas Island looking across to Vancouver Island.