Spring on Saturn
With all the fuss about Phoenix Mars, the Cassini-Huygens mission, still twirling around Saturn four years on, seems to get forgotten - but I still find the pictures of Saturn's rings it's sending back mind-blowing. It's like they got to the moon and found there really was a big smiley face on it.
Saturn's seasons last seven years, and now it's going into spring, so the colours of the north and the south are gradually changing.
