Rev 136 - Aug 4-24, 2010 - Dione, Tethys, Enceladus E11 |
Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw images  |
Rev 136 - Aug 4-24, 2010 - Dione, Tethys, Enceladus E11 |
 Aug 4 2010, 04:45 PM
Post
#1
|
|
 Member  Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655  |
Latest looking ahead details for rev136 available here
Studies of Titan, Dione, Enceladus and Tethys, as well as as a stellar occultation of the rings - a very busy orbit. Was hoping for another glimpse of Calypso (Cassini flies by at about the same distance as the last imaging flyby) but then you can't have it all..... Very close imaging of Enceladus to look forward to, and a few very details Tethys mosaics - finger-lickin' good. |
 |
 
|
|
Aug 8 2010, 02:52 PM
Post
#2
|
|
|
Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
Nice image of the rings and moonlets:
http://saturn.jpl.nasa.gov/multimedia/imag...2/N00160228.jpg |
|
|
|
|
Aug 14 2010, 10:45 PM
Post
#3
|
|
|
Member Group: Members Posts: 241 Joined: 16-May 06 From: Geneva, Switzerland Member No.: 773 |
Latest pictures of Enceladus plumes, Tethys and Dione:
http://www.ciclops.org/view_event/140/Ence...aw_Preview?js=1 The best ever taken pictures of the old basin Penelope on Tethys are especially impressive. Marc. |
|
|
|
|
Aug 14 2010, 11:17 PM
Post
#4
|
||
 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Holy smokes! Wow!
Check out that sinuous groove transecting the crater.
Attached thumbnail(s)
-------------------- If Occam had heard my theory, things would be very different now.
|
|
|
|
|
|
|
Aug 14 2010, 11:57 PM
Post
#5
|
|
|
Senior Member Group: Members Posts: 1582 Joined: 14-October 05 From: Vermont Member No.: 530 |
There is one just to the left of the crater, too. Europa has cycloid features as well...
|
|
|
|
|
Aug 15 2010, 12:06 AM
Post
#6
|
|
 Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
I saw that too, Dan. Odd that a feature so apparently ancient has something fresh-looking like that intruding.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
|
|
|
|
|
Aug 15 2010, 12:33 AM
Post
#7
|
|
|
Member Group: Members Posts: 241 Joined: 16-May 06 From: Geneva, Switzerland Member No.: 773 |
Such kind of linear features have already been imaged on the other side of Tethys, west of Ithaca Chasma (July 2007):
http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=114764 http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=114772 There is even one crossing the chasma: http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=114774 So these might be common features on Tethys. This world might no be as dead as we think. Marc. |
|
|
|
|
Aug 15 2010, 12:34 AM
Post
#8
|
|
|
Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
A twisting or turning stress crack is indicative of displacement of the stress vector over time. On an orbiting body, to me that seems to suggest a force akin to tidal stresses.
-------------------- If Occam had heard my theory, things would be very different now.
|
|
|
|
|
Aug 15 2010, 12:53 AM
Post
#9
|
|
|
Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Agree that it's almost certainly an artifact of tidal stress. The weird part is, why there why now after all these eons? That crust is old, unless the impact rate for Tethys is anomalously high; you'd think that tidal cracks would be frequent enough over time to degrade the cratering at local scales.
It'll be interesting to hear the experts weigh in. Only thing I can think of is that possibly the cracks are relatively permanent--and therefore ancient--features themselves. The crust of Tethys is presumably very thick, and perhaps the existing cracks provide all the tidal stress relief needed without spawning new ones. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
|
|
|
|
|
Aug 15 2010, 01:08 AM
Post
#10
|
||
 Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
A bit of a colorization:
-------------------- |
|
|
|
|
|
|
Aug 15 2010, 01:24 AM
Post
#11
|
|
|
Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
...and it's more than a bit beautiful!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
|
|
|
|
|
Aug 15 2010, 01:46 AM
Post
#12
|
||
 Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
LRGB Hi-phase image of crescent Dione. LRGB image (L is CL1 CL2; R=80%IR3+GRN; G=100%GRN; B=80%UV3+GRN) using the formula posted by John VV), also HiPass filtered to bring out some details.
-------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
|
|
|
|
|
|
|
Aug 15 2010, 03:23 AM
Post
#13
|
|
|
Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
What is this dark stain on the far left?
http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=225044 -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
|
|
|
|
|
Aug 15 2010, 04:14 AM
Post
#14
|
|
 Senior Member Group: Moderator Posts: 3231 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
I think that is one my Tethys "gunshot" wounds...
Yep, same one we saw on Rev36... -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
|
|
|
|
Aug 15 2010, 04:51 AM
Post
#15
|
|
|
Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
I guess the "skeet shoot" nailed it!
-------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
|
|
|
|
|
|
Lo-Fi Version | Time is now: 19th April 2024 - 07:14 AM |
|
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |
|
