- Dark stripe on Tethys
- Rugged Terrain on Rhea
- Featureless Enceladus
- Cratered and lumpy Mimas
- More Rugged Rhea
- Two large impact basins on Rhea
- Dione's wispy terrain
- Cratered Mimas and Saturn's northern hemisphere
- Enceladus and a nearly edge-on ring system
- Tethys' Ithaca Chasma
- Janus Saturn-shine
- Pandora against Saturn's atmosphere
Thursday, July 21, 2005
CICLOPS' daily release today is this processed view of Saturn's moon Helene. Helene is another small trojan moon, like yesterday's daily release Telesto, but instead of being a trojan of Tethys, Helene is a trojan moon of Dione. Helene orbits at the same distance from Saturn as Dione, but 60 degrees ahead in the orbit, at the L4 Lagrange Point. This image has still too low of resolution to show surface features, but the overall shape of the moon can be seen. This image has a resolution of 5 km/pixel but has been magnified by three times to aid visibility.
Wednesday, July 20, 2005
More information can be found on the MIT website.
But Elizabeth Turtle, a Cassini imaging team member at the University of Arizona in Tucson, US, warns there will be no quick answers. “Trying to figure out what is going on is going to take a lot longer than a weekend of swapped emails,” she says.My bloated inbox certainly understands...not that I am complaining :D
CICLOPS has released this highest resolution view of the Tethys trojan Telesto. This moon, only 24 kilometers across, has not yet been seen at high enough resolution to resolve surface features, but images such as this one do allow for the beginning of shape modeling. Higher resolution images should come later this year during encounters that bring Cassini within 20,000 km of this moon.
This view of the F-ring was released by CICLOPS on Monday. This image shows both F-ring shepherds, Pandora on the left and Prometheus on the right, in the same view. While this view has too low of resolution, the serealistic view highlights their relationship to the F-ring.
Sunday, July 17, 2005
Enceladus thoughts and more
On to Enceladus. This little moon continues to amaze. The views of this moon's south polar region were spectacular, including one very high resolution shot taken from a distance of only a few hundred km. Immediately one thinks of Europa, but one has to be careful comparing two very differently sized worlds. I can't count out the possibility of a liquid ocean, but the small size of Enceladus and the prevalence of cratered terrain makes me think that is not what we are see here. I think a more apt analogy is Miranda, with its own dichonomy between concentric ridged corona and heavily cratered terrain. In the case of Miranda, it is thought that upwellings of warm ice produced the coronae. A similar formation mechanism could be invisioned for Enceladus.