Rising Rigel, from Cassini

Caption NASA originale:"The brilliant supergiant star, Rigel, emerges from behind the haze of Saturn's upper atmosphere in this Cassini view.
Rigel in is one of the 10 brightest stars in Earth's sky and forms the left foot (sometimes referred to as the left knee) of the familiar constellation Orion.

Imaging scientists use views like these to probe the vertical structure of haze in Saturn's upper atmosphere. The dimming of the star at each altitude in the atmosphere yields information on the density of the haze at that location.

The image was taken in visible green light with the Cassini spacecraft narrow-angle camera on April 28, 2006 at a distance of approx. 663.000 Km (about 412.000 miles) from Saturn. Image scale is roughly 4 Km (such as about 2 miles) per pixel".