Rosetta - Early Orbital Operations at Comet 67P C-G, August 6, 2014 - November 13, 2014 |
Rosetta - Early Orbital Operations at Comet 67P C-G, August 6, 2014 - November 13, 2014 |
Aug 6 2014, 09:29 AM
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
Cheers at the European Space Operations Centre.
Well done! Rosetta has arrived Time for science!!!!!!! |
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Aug 9 2014, 03:25 AM
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Junior Member Group: Members Posts: 20 Joined: 4-August 14 From: St. Louis, Missouri Member No.: 7230 |
This photo from the end of the large lobe is particularly interesting to me especially when viewed under magnification...
http://blogs.esa.int/rosetta/files/2014/08...ull_image_2.png At 6 o'clock there seems to be layering where bright (icy?) layers show through the mantle of darker material... I count about 6 'steps' climbing to the tall white cliff to the lower left. At 9 o'clock just to left of center there are boulders which are covered in a mantle of the darker material. Also at 9 o'clock to the left of those boulders the mantle of darker material seems to have flowed? over rougher surface features, draping the underlying terrain. At 10 o'clock in the basin there are striations which look to me like some sort of lobate flow/collapse features... perhaps gravel fluidized by sublimation of icy materials underneath. They lead away from the bright cliffs on the left. At about 12 o'clock immediately to the lower left of the large bright boulder there is a small area of evenly spaced striations which may have flowed from a collapse to the upper right. The large smooth area in the center with the small linear features (ice layer?) I suspect is not a dust layer but a layer of gravel as was seen on Itokawa in the Muses Sea. I think most of the fine dust would escape with the outgassing of the comet. I can't wait for higher resolution photos to come down. The geology of this object is so varied. I would bet that the processes which formed all features of the comet and the comet itself will be unraveled over the next few years. |
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