This picture comes to Earth from the Cassini spacecraft. From the left, five moons of Saturn are visible: Janus, Pandora, Enceladus, Mimas, and Rhea (bisected by the edge of the image). The photograph was taken at a distance of 684,000 miles from Rhea.
Image: NASA.
Image: NASA.
This article available online at:
http://www.theatlantic.com/technology/archive/2011/09/picture-of-the-day-five-of-saturns-moons/245473/
