October 12, 2005

Ooooooh, shiny!

We have to admit it: Saturn's moon system is filled with so many shiny things we can't just pick one. A week or so ago, we took a look at weird little Hyperion. This time, we have a striking image of Tethys.

Saturn's moon Tethys

Tethys as captured by the Cassini spacecraft's narrow-angle camera at a distance of approximately 32,300 km/20,000 mi. [Image: Nasa/JPL/Space Science Institute]

This view of the surface of Saturn's moon Tethys, taken during Cassini's close approach to the moon on Sept. 24, 2005, reveals an icy land of steep cliffs. The view is of the southernmost extent of Ithaca Chasma, in a region not seen by NASA's Voyager spacecraft.

The ridges around Ithaca Chasma have been thoroughly hammered by impacts. This appearance suggests that Ithaca Chasma as a whole is very old.

There is brighter material in the floors of many craters on Tethys. That's the opposite situation from Saturn's oddly tumbling moon Hyperion, where dark material is concentrated in the bottoms of many craters.

You can look at a much larger version of the image above if you go here.

NASA has more about Cassini's Tethys fly-by here.

Via Astronomy Picture of the Day.

Posted by Magpie at October 12, 2005 04:20 PM | Shiny Things | Technorati links |

anY NEw pIcTUrES oF uRAnuS???

Posted by: v at October 13, 2005 07:29 AM