土星壁纸
by NASA/JPL-Caltech/Space Science Institute/Hampton University
NASA Image Library · 公有领域（Public Domain）
关于这张图
These two natural color images from NASA's Cassini spacecraft show the changing appearance of Saturn's north polar region between 2012 and 2016. Scientists are investigating potential causes for the change in color of the region inside the north-polar hexagon on Saturn. The color change is thought to be an effect of Saturn's seasons. In particular, the change from a bluish color to a more golden hue may be due to the increased production of photochemical hazes in the atmosphere as the north pole approaches summer solstice in May 2017. Researchers think the hexagon, which is a six-sided jetst…
