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Imaging Diary - Cassini
Imaging Diary - Voyager
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| Craters and Chasms on Tethys - Sep 29, 2005 | | | A recent tweak to Cassini's trajectory allowed an even closer approach of 1,500 kilometers (930 miles) to the Saturnian moon, Tethys, than originally planned, and yielded unrivaled views of the icy moon’s cratered landscape and a look into the gargantuan canyon system called Ithaca Chasma. |
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Alliance Member Comments
Dark Chasm |
Dragon_of_Luck_Mah_Jonng1971 2017-05-06 18:59:44 | View all member's comments | One of the best views yet of the entire mission of Ithaca Chasma on Tethys showing its remarkable depth in a global context. | |
Tethys Tops Saturn |
NeKto 2016-07-17 05:43:32 | View all member's comments | at first glance, i do see distance between Saturn and Tethys. i have to concentrate a little to see all the distance the perspective of the rings indicate is there, but i can see it.
a little concentration in the other direction and i can see Tethys at the same distance as Saturn, hovering over the pole.
fun to play with. | |
Tethys ‘Eyes’ Saturn |
Robert 2015-06-15 18:30:29 | View all member's comments | This is a rare and stunning image of Thethys because we don't usually see so many of the large craters althogether in such luminous relief.
The top one must be Odysseus. The bottom one might be Melanthius but that crater seems too far North. And the fainter big crater in the middle looks like Penelope. Please correct me if I'm wrong about these craters.
I've checked the maps and can't figure out any other interpretation. But then this could be because of the Sun-Tethys angle and similar to our own Moon this Cassini image could be a unique angle that throws shallower craters into greater relief.
But still, this is a most interesting image of Tethys. It says something to me that seeing even a familiar moon from just a few illumination angles is not enough for me to know it.
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A Splendor Seldom Seen |
thefuz 2012-12-19 12:15:26 | View all member's comments | Can anyone identify the other bodies in the picture? There are a few other dots that resemble Tethys and Enceladus in color.
- Immediately to the right of Enceladus
- Immediately to the left of the outer ring near the vertical midpoint of the ring structure
- In the middle of the open space in the upper right quadrant of the image
What an awesome photo - thanks Cassini (team)! | |
Tiny Tethys |
NeKto 2012-11-27 07:58:54 | View all member's comments | Heck, Tethys is dwarfed by one circular cloud formation in the southern hemisphere. i can just imagine if we had a storm with a larger diameter than our moon. on Saturn, a storm with a diameter larger than Titan might be just medium sized.
what a system! | |
Tethys 'Rev 164' Raw Preview #2 |
thetonster 2012-04-25 04:39:31 | View all member's comments | R164 raw 2 shows mostly crater-saturated terrain, but in the upper left quadrant a couple of features are noteworthy.
The first is that Fault scarp from the large, irregular crater to the double crater (likely due to a simultaneous impact of two bodies).
The scarp casts shadows along 2/3 of its length, then suddenly changes to a bright cliff; this suggests a rotation has occurred on an axis normal to the fault.
Second is a lobate flow, off the rim of ‘North Dike’ crater, whose sharpness of form makes it seem to float above the underlying landscape. It appears to be a viscous flow, rather like Pahoehoe lava, in contrast to the loose-matter flows in ‘South Dike’ crater.
Crater chains abound in this scene, too.
Tethys is definitely interesting, and probably has more surprises for us. | |
Dione 'Rev 158' Raw Preview #1 |
Dragon_of_Luck_Mah_Jonng1971 2011-12-17 10:07:19 | View all member's comments | At the middle of this image there's an impact basin, I suppose. It's looking rather degraded. It has got 2 rings and a central peak, I suppose. It's looking similar to the Odysseus Basin on Tethys and less similar to the Herschel Crater on Mimas, I suppose.
At my first glance I didn't notice it and this image looked more boring. | |
Helene 'Rev 144' Raw Preview #1 |
Mercury_3488 2011-02-28 16:06:16 | View all member's comments | Hi NeKto
I have not been here for a while. That is true, perhaps the flow lines could also indicate mass concentrations within Helene.
I also understood that the flow lines could also be from ice swept up from the geysers on Enceladus. The Tethys tojan moons Telesto & Calypso are also largely covered in fine ice & Calypso too shows hints of flowlines. Would be interesting to get a close up of Polydeuces if possible too, the other Dione trojan moon, the one that trails Dione. Polydeuces is only about 3.5 KM wide at most, so Helene is very much larger.
Andrew Brown. | |
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