Reblogged from alxndrasplace
(NASA) Why would a cloud appear to be different colors? A relatively rare phenomenon known as iridescent clouds can show unusual colors vividly or a whole spectrum of colors simultaneously. These clouds are formed of small water droplets of nearly uniform size. When the Sun is in the right position and mostly hidden by thick clouds, these thinner clouds significantly diffract sunlight in a nearly coherent manner, with different colors being deflected by different amounts. Therefore, different colors will come to the observer from slightly different directions. Many clouds start with uniform regions that could show iridescence but quickly become too thick, too mixed, or too far from the Sun to exhibit striking colors. The above iridescent cloud was photographed in 2009 from the Himalayan Mountains in Nepal, behind the 6,600-meter peak named Thamserku.
Reblogged from artchipel
El Tatio is a geyser field about 2 hours drive from San Pedro de Atacama located at 4,320 meters above sea level. After his surreal journey to the place, Canadian interactive web designer and visual artist Owen Perry come back with some spectacular shots. Based out of Whistler, British Columbia and specializing in landscape and travel photography, Owen’s primary influences are the nostalgic qualities of film as well as Canadian cultural narratives owed to the Group of Seven, National Film Board of Canada (NFB), Canadian Broadcasting Corporation (CBC), and National Geographic.
© All images courtesy of the artist