DD wrote:
Daz Dayz (http://dazza101.blogspot.com) is reporting new images of
Rhea taken last Sunday by the Cassini spaceprobe. The image shows a
long, very straight line across the moon. Does anyone have an idea what
this may be?

I don't have any idea what it might be. Here is the same thing in
much higher resolution and from a different angle (you may need to
copy&paste the link together):

http://saturn.jpl.nasa.gov/multimedi...iImageID=29982

You may have to adjust the brightness / contrast of the image to
see it clearly. Looks like a geologic fault, going in a big
smooth curve.

Regards,

- Alex