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May 23, 2007, HiRISE release
Guest_AlexBlackwell_*
post May 23 2007, 04:01 PM
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May 23, 2007, HiRISE release
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djellison
post May 24 2007, 12:12 PM
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What sort of liquid at .006 bar and -80degC? Would a liquid not have specular reflection etc. Orbital images of lakes and seas on earth are not black. Do not confuse the 'black lakes' of Cassini Radar imagery with the optical wavelengths of HiRISE.

There is nothing nonsensical in the concept of overhangs. We see them on Earth - they could be even more extreme in the 1/3rd G of Mars.

Doug
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- AlexBlackwell   May 23, 2007, HiRISE release   May 23 2007, 04:01 PM
- - djellison   Ustrax - finally - you have what you asked for ht...   May 23 2007, 04:10 PM
|- - ustrax   QUOTE (djellison @ May 23 2007, 05:10 PM)...   May 23 2007, 04:20 PM
- - ngunn   Well, just look at that great big hole in the grou...   May 23 2007, 04:12 PM
|- - Juramike   QUOTE (ngunn @ May 23 2007, 12:12 PM) Wel...   May 23 2007, 10:06 PM
|- - ngunn   QUOTE (Juramike @ May 23 2007, 11:06 PM) ...   May 25 2007, 10:01 AM
|- - ustrax   I've made a new animation focusing on the top-...   May 25 2007, 01:47 PM
|- - tedstryk   Perhaps they could rotate the spacecraft to compen...   May 25 2007, 03:03 PM
- - lyford   It's obvious that's an Acme Portable Hole ...   May 23 2007, 04:59 PM
- - Juramike   Wow!!! Is that the entrance or exit?   May 23 2007, 05:12 PM
|- - AlexBlackwell   QUOTE (Juramike @ May 23 2007, 07:12 AM) ...   May 23 2007, 07:24 PM
|- - nprev   QUOTE (AlexBlackwell @ May 23 2007, 12:24...   May 23 2007, 07:48 PM
|- - AlexBlackwell   QUOTE (nprev @ May 23 2007, 09:48 AM) (gr...   May 23 2007, 07:54 PM
- - nprev   ..okay, THIS made my jaw drop! Why so circular...   May 23 2007, 06:12 PM
- - djellison   Well - unless its many many km's - then there ...   May 23 2007, 06:16 PM
- - stevo   Looks to me like one of Kim Stanley Robinson's...   May 23 2007, 06:21 PM
|- - zoost   QUOTE (stevo @ May 23 2007, 06:21 PM) .. ...   May 24 2007, 11:25 AM
- - hendric   I wonder what IR will show us, especially at night...   May 23 2007, 06:39 PM
- - ElkGroveDan   Can someone less lazy than I do the calculations o...   May 23 2007, 07:20 PM
- - elakdawalla   See this topic for more information and links to c...   May 23 2007, 07:20 PM
- - volcanopele   Given this image's location on Mars, I would p...   May 23 2007, 07:32 PM
- - tty   Yes, but it must be a very large tube since the ho...   May 23 2007, 07:43 PM
- - nprev   The former; maybe he's tight enough with the l...   May 23 2007, 08:08 PM
- - djellison   38 degrees. Call it 130m across - sohcahtoa and a...   May 23 2007, 08:21 PM
- - elakdawalla   According to the caption on the image, though, HiR...   May 23 2007, 08:22 PM
- - elakdawalla   Just for grins, I went to HRSCview and located the...   May 23 2007, 08:41 PM
- - nprev   Nice find, Emily! Seems like it's right in...   May 23 2007, 08:53 PM
- - tuvas   Ahh, they finally released this picture. The one...   May 23 2007, 10:36 PM
|- - ElkGroveDan   QUOTE (tuvas @ May 23 2007, 02:36 PM) Oh,...   May 23 2007, 11:34 PM
|- - tuvas   QUOTE (ElkGroveDan @ May 23 2007, 04:34 P...   May 23 2007, 11:35 PM
|- - ElkGroveDan   OK now I see the history of this with Odyssey. So...   May 23 2007, 11:38 PM
- - dvandorn   Looks like a good landing site for MSL -- if it st...   May 23 2007, 11:48 PM
- - antipode   Martian bungee jumping anyone? Surely this wil...   May 24 2007, 12:06 AM
- - antipode   Actally, regardless of how deep these things are, ...   May 24 2007, 02:08 AM
- - mchan   MRO is in sun-synchronous orbit so the nadir point...   May 24 2007, 03:20 AM
- - CosmicRocker   QUOTE (elakdawalla @ May 23 2007, 03:41 P...   May 24 2007, 04:55 AM
|- - AndyG   Excellent. ~100m across? >200m deep? What a pla...   May 24 2007, 07:26 AM
|- - ustrax   Is it really impossible to dig out something from ...   May 24 2007, 09:36 AM
|- - akuo   QUOTE (ustrax @ May 24 2007, 09:36 AM) Is...   May 24 2007, 01:16 PM
|- - Gray   QUOTE (ustrax @ May 24 2007, 09:36 AM) No...   May 24 2007, 04:25 PM
- - djellison   Yes - it really is impossible. That's not det...   May 24 2007, 10:22 AM
|- - ustrax   QUOTE (djellison @ May 24 2007, 11:22 AM)...   May 24 2007, 01:17 PM
- - djellison   What sort of liquid at .006 bar and -80degC? Woul...   May 24 2007, 12:12 PM
- - climber   I can't imagine anything else than a hole in a...   May 24 2007, 12:33 PM
- - ngunn   Regarding that overhang: We are told that the sun...   May 24 2007, 12:42 PM
- - djellison   ^ "Oh, for those of you wanting to overlay M...   May 24 2007, 12:42 PM
- - zoost   There must be some liquids (carbon based) that abs...   May 24 2007, 12:47 PM
- - djellison   Because the ceiling is overhanging. It's a co...   May 24 2007, 01:02 PM
- - djellison   I'm not saying that you're not pulling out...   May 24 2007, 01:19 PM
|- - ustrax   QUOTE (djellison @ May 24 2007, 02:19 PM)...   May 24 2007, 02:04 PM
|- - Tesheiner   QUOTE (djellison @ May 24 2007, 03:19 PM)...   May 24 2007, 03:30 PM
- - akuo   Binning done in the electronics before AD transfor...   May 24 2007, 02:21 PM
- - centsworth_II   Will we have to wait until there is a laser altime...   May 24 2007, 02:40 PM
- - Juramike   It's not an abyss, it's a martian oubliett...   May 24 2007, 04:10 PM
- - Stu   Maybe one day...   May 24 2007, 04:43 PM
- - tuvas   MRO flight rules limit the off-NADIR pointing to 3...   May 24 2007, 08:14 PM
|- - ustrax   Regarding the "work" I've done with ...   May 25 2007, 08:08 AM
- - ngunn   Thinking about the possible pattern of illuminatio...   May 25 2007, 09:01 AM
|- - Oersted   QUOTE (ngunn @ May 25 2007, 11:01 AM) Thi...   May 30 2007, 10:55 AM
|- - ngunn   QUOTE (Oersted @ May 30 2007, 11:55 AM) G...   Jun 4 2007, 09:55 AM
- - marswiggle   I had a quick look in the MOC Gallery for similar ...   May 25 2007, 03:23 PM
|- - ustrax   QUOTE (marswiggle @ May 25 2007, 04:23 PM...   May 25 2007, 04:15 PM
- - nprev   Wait a minute, ustrax...are you sure that's no...   May 25 2007, 05:05 PM
- - Gray   Marswiggle, The image of Dena that you posted has...   May 25 2007, 05:22 PM
- - marswiggle   While I don't know, let them answer, in that v...   May 26 2007, 11:30 AM
- - Gray   Thanks. I should do more than look at the pictur...   May 26 2007, 02:01 PM
- - tty   130 meters deep, that is really something for a la...   May 26 2007, 06:31 PM
- - Stu   What's causing that lighter area to the top of...   May 27 2007, 09:48 AM
- - dvandorn   Actually, Stu, I think the lightened area looks ro...   May 27 2007, 10:08 AM
|- - Stu   QUOTE (dvandorn @ May 27 2007, 11:08 AM) ...   May 27 2007, 10:21 AM
|- - tty   QUOTE (Stu @ May 27 2007, 12:21 PM) And t...   May 27 2007, 05:30 PM
- - djellison   I doubt it's wind through the lava tube itself...   May 27 2007, 11:38 AM
|- - Stu   QUOTE (djellison @ May 27 2007, 12:38 PM)...   May 27 2007, 03:13 PM
|- - Juramike   QUOTE (djellison @ May 27 2007, 07:38 AM)...   Jun 1 2007, 07:12 PM
- - nprev   Chilling yet fascinating, Stu...really captures th...   May 27 2007, 03:58 PM
- - J.J.   That. Is. Incredible. Interesting, how this one...   May 28 2007, 03:12 PM
- - tuvas   It's interesting, not since the Victoria crate...   May 28 2007, 05:22 PM
- - bdunford   I don't know if this is news to anyone, but FW...   Jun 1 2007, 06:04 PM
- - AlexBlackwell   Are There Giant Caves on Mars? Planetary Radio Mo...   Jun 18 2007, 08:47 PM
- - ustrax   Wow! They were able to actually get the bottom...   Mar 19 2009, 08:24 PM

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