Janus from 357.000 Km

This close-up look at Saturn's moon Janus reveals spots on the moon's surface which may be dark material, maybe exposed by impacts. If the dark markings within bright terrain are indeed impact features, then Janus' surface represents a contrast with that of Saturn's moon Phoebe, where impacts have uncovered bright material beneath a darker overlying layer. Recent theories say also that Janus may be a porous body, composed mostly of water ice.
This image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 20, 2005, at a distance of approx. 357.000 Km (about 222.000 miles) from Janus and at a Sun-Janus-spacecraft, or phase, angle of 6°. Resolution in the original image was 2 Km (about 1,3 miles) per pixel. The view was magnified by a factor of two and contrast-enhanced to aid visibility of the moon's surface".