Brothers in the Night

Caption NASA:"The Cassini Spacecraft watches a pair of Saturn's moons, showing the hazy orb of giant Titan beyond smaller Tethys.
In the foreground of the image, Ithaca Chasma can be seen running roughly North-South for more than 1000 Km (about 620 miles) on Tethys. Titan's detached, high-altitude Haze Layer and North Polar "Hood" are also visible here.
This view looks toward the Saturn-facing sides of Titan and Tethys.

The image was taken in Visible Green Light with the Cassini Spacecraft narrow-angle camera on Oct. 18, 2010. The view was obtained at a distance of approx. 2,5 MKM (such as about 1,6 MMs) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 55°. The view was obtained at a distance of approx. 1,5 MKM(such as about 930.000 miles) from Tethys and at a Sun-Tethys-Spacecraft, or Phase, Angle of 55°".