Cassini Visits Rhea...

Cassini is still traipsing about the Saturnian system, producing vast quantities of quality science.  As it gets nearer to the end of its mission (in particular, as it runs out of fuel), the mission planners are sending it on ever more risky endeavours.  Most especially they are sending it closer and closer to Saturn's satellites (this is risky because the gravitational field of these satellites attracts more space junk that could kill Cassini, and because some of these satellites even emit dangerous materials).

Just in time for the holidays, Cassini snapped this closeup of little Rhea, looking a bit like a Christmas tree ornament...