Difusor Físico Astronómico: El núcleo abultado de Saturno implica que las lunas son más jóvenes de lo que se pensaba

El núcleo abultado de Saturno impli Saturn's moon Dione, foreground, appears darker than the moon Tethys because it has a lower surface albedo, as shown in a photograph taken from the Cassini spacecraft on March 23, 2010. At the time, Cassini was about 746,000 miles from Dione and about 1.1 million miles from Tethys.