Poor Rhea. This Saturn moon
has been impacted so many times over the eons that it has craters within
its craters.
This image was taken by
NASA’s Cassini spacecraft during its latest flyby on July 14 as it approached
within 149,000 miles of the moon’s southern hemisphere. The image scale is
about 0.6 miles per pixel and the largest visible crater—in the upper right
portion of the image—is 71 by 57 miles in size.
The temperature on the
moon’s sunlit surface is approximately -174°C, while the shaded areas are about
−220°C.
