Phobos |
Phobos |
Oct 14 2007, 05:10 PM
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#31
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Member Group: Members Posts: 688 Joined: 20-April 05 From: Sweden Member No.: 273 |
Good catch on the splatter pattern Ed. That certainly does look more like a crater chain from a debris or cometary impact. Now that is interesting. How do you get a splatter pattern/crater chain on a body with essentially zero gravity? It certainly can't be by stuff just falling back to the surface. Anything moving slowly enough to fall back on Phobos probably wouldn't be able to crater a marshmallow. I suppose a string of debris might stay together well enough to hit Phobos on a subsequent orbit but it seems rather unlikely. It seems at least as likely to be debris coming from an impact on Mars itself. |
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Oct 14 2007, 06:53 PM
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#32
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Wow, Phil, that's a really cool image, thanks for pointing it out!
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Oct 14 2007, 09:04 PM
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#33
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
... and add a bit of colour, just 'cos it's Sunday night and there's nothing on telly until Medium comes on...
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Oct 15 2007, 03:00 AM
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#34
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Great stuff, Phil & Stu!!! Now I know exactly how Phobos must have appeared to the crew of the spacecraft Rolling Stone as it approached Phobos in Heinlein's immortal novel...absent the industrial complexes and filled landing berths, of course...
Quick inspiration: we sense therefore we are unmanned and alone solitary robots peer deeply into the Unknown seeing, tasting, hearing that which no human has yet known, like a splash of water or blast of radiation on tender skins We, safe in the cradle, see vistas dreamed of yearned for, in our infant dreams by generations denied their future by tumult, by the restless and capricious nature of our species by priorities, set too often by those who cannot see far horizons, even through eyes of silicon, gallium arsinide, feed horns and reflectors... blindness is inexcusable as the spectrum of the Universe unveils itself, reluctantly, as bigger than our minds what challenge, what wonder, can possibly compare? we must see, at least in order that someday we may touch -------------------- 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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Oct 15 2007, 08:29 PM
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#35
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Newbie Group: Members Posts: 7 Joined: 20-July 07 From: Grenoble, France Member No.: 2904 |
Here's a nice new Phobos image from Mars Express, orbit 3909: [attachment=12280:phob_hrs...bit3909x.jpg] Phil Hey Phil, could you tell me where you got the pictures from orbit 3909, because I do find only the raw images until the orbit 3160 on the ESA server... Thanks a lot |
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Oct 15 2007, 08:41 PM
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#36
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
I found it in the place mentioned in post 30, above.
Phil -------------------- ... 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 PDF: 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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Oct 17 2007, 04:57 PM
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#37
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Oct 19 2007, 03:43 PM
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#38
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Senior Member Group: Members Posts: 1669 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Shall be interesting to see what shape model results Willner et al. are going to present at the November conference.
Seeing that image I wonder who launched that potato into low Mars orbit anyway ? -------------------- Steve [ my home page and planetary maps page ]
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Oct 19 2007, 03:45 PM
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#39
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Dr. Willner said I'd need to ask Neukum directly for permission to post that other image, but he pointed out one that had been released on the Web in February (apologies if someone else already posted this elsewhere):
Phobos über der Marsatmosphäre --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Oct 19 2007, 07:12 PM
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#40
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Wow, that's a gorgeous picture of Phobos, thanks for the link Emily... that one passed me by, somehow...
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Oct 19 2007, 07:23 PM
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#41
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
That picture was around for quite a while now: http://www.unmannedspaceflight.com/index.p...ost&p=84812
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Nov 11 2007, 12:13 AM
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#42
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
Here are a couple of Mars Express HRSC images of Phobos, from the PDS courtesy of G. Neukum. They have had a bit of extra processing in my usual manner to brighten the terminator area.
Phil -------------------- ... 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 PDF: 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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Nov 11 2007, 12:16 AM
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#43
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Senior Member Group: Members Posts: 1669 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
That's something with three different orientations of grooves I can see in the top image...
-------------------- Steve [ my home page and planetary maps page ]
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Nov 11 2007, 08:17 AM
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#44
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Member Group: Members Posts: 106 Joined: 26-September 05 Member No.: 508 |
It is already gridded, it will be easy for Phil to make us a new model and map.
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Nov 11 2007, 06:48 PM
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#45
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Member Group: Members Posts: 753 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
At first glance, I thought we were looking at it through a screen door.
-------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
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