土星壁纸
by NASA/JPL-Caltech/Space Science Institute/Cornell University
NASA Image Library · 公有领域（Public Domain）
关于这张图
Working with image data from NASA's Cassini mission, researchers have found evidence that Saturn's moon Enceladus may have tipped over, reorienting itself so that terrain closer to its original equator was relocated to the poles. This phenomenon is known as true polar wander. Researchers discovered a chain of basins across the surface of Enceladus along with a pair of depressions that line up with an equator and poles, respectively, if the moon's axis of rotation was reoriented by about 55 degrees of latitude. These maps look toward the icy moon's southern hemisphere, with colors representin…
