http://apod.nasa.gov/apod/ap061016.html is the source of this image, originally taken by the Cassini Satellite in 2006. Earth is the bright dot to the left of the bright rings (at about 10'o'clock)
Visual Aid: https://lh6.googleusercontent.com/-MXqltuGZzFM/T2WdmgHWB9I/AAAAAAAAHOo/SaDfPQn4WJw/s912/Saturn_by_Cassini_Earth.jpg