Dawn's first orbit, including RC3, March 6, 2015- June 15, 2015 |
Dawn's first orbit, including RC3, March 6, 2015- June 15, 2015 |
May 8 2015, 07:44 PM
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#151
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Those look a lot more like data dropouts or something else far more mundane than mini-moons or caves. Let's please not jump right to the most exciting (and improbable) conclusions here.
-------------------- 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.
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May 8 2015, 07:58 PM
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#152
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Member Group: Members Posts: 714 Joined: 3-January 08 Member No.: 3995 |
Is the latest image true 1x1 aspect ratio? It may be my imagination, but Ceres here seems a bit stretched north-south. If I recall, the released February 19 rotation sequence was slightly stretched in such a manner.
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May 8 2015, 10:25 PM
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#153
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Member Group: Members Posts: 714 Joined: 3-January 08 Member No.: 3995 |
QUOTE Now we got an image that shows mostly the dayside of Ceres. After a bit of staring.... The north pole is at mid terminator at the top - FYI. |
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May 8 2015, 11:06 PM
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#154
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Member Group: Members Posts: 714 Joined: 3-January 08 Member No.: 3995 |
A thought....
There appears to be a number of broad depressions with soft edges scattered all over the surface that remind me of grabens. For a lack of a better term, I've nicknamed them 'soap dishes'. A few of these are contained within large craters and basins, possibly with associated 'mounds' (horsts?). Having said that.... In the latest image, a crater with a bright wall appears to be on or near the rim of one of these 'soap dishes' (in the large crater on the left). Is this association coincidence, or could this be a clue to whatever processes produced the bright areas here and elsewhere? If these 'soap dishes' are grabens, the long rim of one would mark a fault in the crust. Such a fault (fracture zone) could potentially serve as a conduit for material rising from below at any time, even if the graben itself is extremely ancient. The material movement likely would have happened in the distant past as well, though. |
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May 10 2015, 08:41 AM
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#155
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Member Group: Members Posts: 238 Joined: 15-January 13 Member No.: 6842 |
Catalogue entries for PIA19336 and PIA19337 have been reassigned to PIA19536 and PIA19537 respectively. Anyone got any idea why? They were listed in Emily's blog: http://www.planetary.org/blogs/emily-lakda...dawn-ceres.html under their old designations, so I'm giving a heads up in case anyone will want to look for them again.
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May 10 2015, 10:49 PM
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#156
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Member Group: Members Posts: 714 Joined: 3-January 08 Member No.: 3995 |
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May 11 2015, 01:58 PM
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#157
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
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May 11 2015, 02:45 PM
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#158
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Junior Member Group: Members Posts: 95 Joined: 5-September 07 Member No.: 3662 |
RC3 May 4th Rotation http://photojournal.jpl.nasa.gov/catalog/PIA19547 Well, they're resolved now! But... deposits?...or a snowball that went splat? |
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May 11 2015, 02:45 PM
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#159
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Member Group: Members Posts: 910 Joined: 4-September 06 From: Boston Member No.: 1102 |
Lots of little white spots showing up around the globe--not just next to the "two" big spots in region 5. Little white spots--whatever they are--are common on Ceres.
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May 11 2015, 02:52 PM
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#160
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Member Group: Members Posts: 423 Joined: 13-November 14 From: Norway Member No.: 7310 |
Wow, there's a lot of stuff to take in in that animation. I note that it looks like the dark area to the east of the brightest stuff is back; which now looks a bit like it is asymmetrically centred on that crater.
And then of course, those long rifts - or whatever the appropriate terminology is. -------------------- |
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May 11 2015, 02:57 PM
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#161
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Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
Yeah, I give up, I have no clue what the heck double-white-spot is. The closer we get, the weirder it looks!
-------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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May 11 2015, 03:15 PM
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#162
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Solar System Cartographer Group: Members Posts: 10153 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 11 2015, 03:28 PM
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#163
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Member Group: Members Posts: 423 Joined: 13-November 14 From: Norway Member No.: 7310 |
Looking at them again, that explanation makes sense. They look like rifts/valleys when they are on the right hand side of the frame (like in the image below), and then appear to dissolve/disappear when are on the left, so maybe the rift-like appearance is caused by a deceiving viewing angle.
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May 11 2015, 03:29 PM
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#164
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Some of those "rifts" look a lot like those on Rhea -- I forget what the current thought is on those, are they thought to be secondaries? (Paul Schenk, are you lurking here?)
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May 11 2015, 03:31 PM
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#165
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Member Group: Members Posts: 148 Joined: 9-August 11 From: Mason, TX Member No.: 6108 |
Yeah, I give up, I have no clue what the heck double-white-spot is. The closer we get, the weirder it looks! The off-center 'dot' now has a constellation of smaller surrounding dots, and the central dot now has two components (see attachment). So along with the dark, asymmetric pattern to the side, I'm inclined to look at this as a very recent strike from a broken object, but this does not align with the purported elevation reports. -------------------- --
Don |
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