Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
Sep 7 2007, 05:46 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
[Moderator's note: This thread contains images from the Iapetus 2007-09-10 flyby and discussion of them. It was created by splitting this thread which contains pre-flyby discussion]
Another CL-UV3-GRN-IR1 set was posted today, though Iapetus seems to have been hiding from the green and IR filters...here's my best effort at making something from the CL and UV3 images. Lots of topography on the limb! --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 11 2007, 06:17 AM
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
dvandorn, I'll have to look at these images again to see what you are talking about. Any chance you can draw up something in Paint or Photoshop to illustrate what you are talking about?
To me, these images tell the tale of a very ancient world. The surface is very heavily cratered. We do do see some relatively young craters (don't ask me for an age estimate) with flat floors, central peaks, and mild to major slumping along crater walls. We also see some very ancient craters that have been eroded by later impacts, which have ruggidized the crater floors and space weathering, which has smoothed out many of the earlier hummocks produced from slumping. From the images that have been returned so far, expect the highest resolution images to show a relatively smooth surface with impact craters down to the limit of resolution, though it maybe interesting to see if the dark material deposition has buried some of the smallest impact craters. This would be evidenced of course by a lower limit to impact crater size. Could be interesting to see. I don't expect the kind of bouldery surface we saw at Enceladus. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
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