Solar systems largest crater, maybe...

[lostfisherman]

The Sun is no longer blocking transmission between Cassini and Earth, raw images are being sent back now.

Seeing as I am up at this ungodly hour, I wondered if this image of Iapatus' crater shows something larger than Herschel (Mimas) or Odysseus (Tethys). It is VERY big, though for some reason it was imaged mostly with the GRN (green) filter...

Here is a clear filter image, look at the dark region
http://saturn1.jpl.nasa.gov/multimedia/ ... 006756.jpg

Other images here
http://saturn1.jpl.nasa.gov/multimedia/ ... seLatest=1

Oh I love this Cassini mission

[Ynjevi]

Cool, that crater wasn't seen before by the Voyagers.

But it is nowhere largest crater in the Solar System. South Pole-Aitken Basin in the Moon is 2500 km in diameter. Hellas Basin in Mars has similar size but the ring structure reaches about 4000 km from the center of the crater, whereas Iapetus has diameter of only 1460 km.

[Evil Dr Ganymede]

Oh good, it wasn't just me who noticed that there... it does look suspiciously like the rims of a big, very relaxed crater.

What is it about Saturn's moons and big craters anyway?!