... of Saturn's second largest moon Rhea obtained by NASA's Cassini spacecraft ... highest-resolution views ever obtained of Rhea.The images, captured on flybys ... Saturn, scientists have thought of Rhea ...
... dual view of Saturn's icy moon Rhea marks the return of NASA's Cassini ... geyser-moon, Enceladus.The two views of Rhea were taken about an hour-and-a-half ... subtle color variations across Rhea's ...
... of the moons Enceladus, Dione, Rhea, Hyperion and Iapetus.The moons ... http://www.nasa.gov/cassini.Several new images of Rhea, a moon measuring 1,528 kilometers ... 500 kilometers (310 miles) of Rhea's ...
... unprocessed images of Saturn's moon Rhea during a close flyby on March ... mission's last targeted encounter with Rhea and only the fourth Rhea targeted encounter for the whole mission. Cassini flew ...
... Saturn's second largest moon, Rhea, were taken on March 10, 2012, ... acquired a 30-frame mosaic of Rhea's leading hemisphere and the side of Rhea that faces away from Saturn. The ... the youngest ...
... unprocessed images of Saturn's moon Rhea were taken on Jan. 11, 2011. These ... include Cassini's best imaging of Rhea to date. At closest approach, ... kilometers (47 miles) above terrain in Rhea's ...
... one each of Hyperion, Dione, and Rhea -- occurred in the last year. ... are also very densely cratered. Rhea has shown itself to be heavily ... rings, an occultation of Dione by Rhea, a color view ...
What is obvious are the number of impact craters, at least three with central peaks.
This area looks more like the Jupiter moon Callisto, Saturn moon Rhea or Uranus moon Umbriel, with liquid hydrocarbons filling some of the colder hollows and craters. Will be interesting to see some more recent SAR imagery of this area.
Andrew R Brown.
Lots of wonderful features on this image.
It has the sci-fi look with all those many worlds in one single image.
But also its small surprises and trompe-l'oeil style.
With Rhea seeming to take the place of Saturn, and with the rings looking like they are taken from the unlit side, you really need to read the explanations to decipher it correctly.
Thanks Cassini imaging team, beautiful job again.
I agree with you, many of those craters are very Mimas like. I still think that Rhea is very unevolved, one of the largest, in fact potetially the second largest unevolved object in the entire Solar System, only the Jupiter moon Callisto taking # 1 in that list.
The similar sized Uranus moons Titania & Oberon are certainly far more evolved than Rhea, Titania has huge graben, possible frosting & a large smoother region with smaller & softened craters & Oberon although cratered, shows signs of cryovolcanism with many craters having dark floors, at least on huge chasm, many craters appear 'softened' like Enceladus, Dione, Miranda, Ariel, Titania, Triton & Ganymede, worlds that have been & some may, in the case of Enceladus & Triton still are geologically active.
Rhea shows none of that, a surface that is practically craters on craters on craters. Some faulting is present, but how much of that is due to the Tirawa Basin forming event or other impacts, remains to be seen. Rhea is certainly a relic from the earliest days, much to tell us about the history of the Kronian system ,regarding the environment this far out from the Sun & cratering rates of the Kronian system from the period shortly after the formative period. Rhea is fascinating, not so much because of Rhea itself, but because of what Rhea can tell us about the history of the Kronian system as a whole. Iapetus is another moon interesting for the same reason, aside from the huge mountain ridge, little else appears to have happened there either, Mimas too. Rhea is extremely photogenic too. It's an amazing surface visually, craters of differing shapes & sizes, some regions eppear more hilly than others, etc.
Yes they are Cosmic Rays @ the lower left.
"I think it's the same medium-sized deep crater that is in the middle of the image "Rhea 'Rev 143' Raw Preview '3" . ":
yes it is, see also the link for the Planetary Society website
http://www.planetary.org/blog/article/00002877/ (no trick under that hyperlink ;-)
There Emily Lakdawalla provides more comment on the photos, and eliminated some of the unwelcomed features in raw images.
At my first glance at its small version I thought it were a view of a Rhean rift valley similar to a Dionean rift valley shown on "Dione "Rev 129" Flyby Raw Preview #3" labelled 04/08/2010 which shows a very interesting Dionean surface at very high resolution ( rotate the Dionean view by 180 degrees then it makes more sense. ) But at its full version I remarked rapidly that it's only a view of a Rhean crater looking somewhat like a rift valley at first glance because of foreshortening.
It's still interesting because it's showing a lot of details at the crater wall and it has got a very high resolution.
I think it's the same medium-sized deep crater that is in the middle of the image "Rhea 'Rev 143' Raw Preview '3" .
Just to say some moronic spammer has hacked into our site with Viagra ads. Please do not click on the links I have provided until this is fixed.
I hope that I can contribute more here in the not too distant future.
Carolyn, could you remove the links I provided? I can replace them after the site is fixed.
But I will say, this Rhea pass so far looks 100% successful. The imagery is perfect & it will be interesting to see if Rhea has MASCONs, Cassini certainly passed close enough & will be interesting to see more about the 'exosphere' that Rhea posseses. The dead straight faults are fascinating.