Mars biology-Links of interest

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Dana







PostPosted: March 21, 2009 8:08 AM 

Finding this gallery site for organic chemistry crystallography images of isolated and refinement generated crystals which show the defined character of particular compounds from various Earth based organic complex chemistry items, I thought a general link list for such sites of interest and reference value might be worthy of a topic for sharing the links.
These are X-ray diffraction imaging of very small particular chemistry's, and would not be seen in the current lander's instrument imaging, however, as the basic shapes can be expected to be similarly formed on Mars with the Martian propensity for crystallization and extreme organizational transformation of equivalent Earth 'soft tissue' basic chemistry items, it seemed of value to give others access to the gallery of crystals.
Might we have a larger scale viewable influence shown in some of the futureor current images of Mars organic materials if we identify organic compounds as surviving at the Mars surface soil depth with future landers?
Additional general reference links for viewing Earth biology as equivalent to future Mars organic materials.
Suggestions from your links to aid others?

Dana Author Profile Page



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PostPosted: March 21, 2009 9:13 AM 

Crystalography Education Websites, from the HHMI source page of the topic gallery link. The bulletin is good for general reading and some links.

Various links with valuable general information about organizational processes in organic materials. Imaging what a very cold equivalent forced material would resemble in non-Earth standards is a play for the imagination and wit.

MPJ


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PostPosted: March 24, 2009 10:22 AM 

If not already known, I think this article is quite interesting and illustrates the efforts of the rover scientists in regards to micro/macro fossils on mars.:
[link]

Crystal - life related, this article may be of interest (short read for a start into this kind of research):
http://www.astrobio.net/news/modules.php?op=modload&name=News&file=article&sid=3073&mode=thread&order=0&thold=0

Dana Author Profile Page



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PostPosted: April 1, 2009 2:46 PM 

Thanks for the links, MPJ, as I need to spend more time concentrated on the filtered related information that may affect Mars returns, rather than trying to scan and 'alert' filter research lists. Filters in scans of article lists can be difficult to control, as they either include too much or exclude the prize articles which are marginalized by the keywords used in combination.

I passed this set of articles about anoxic cave lakes, and it may have a history on topics here already, but the read for all others is fairly current(2006-2009), and it includes listings of the life types found in anoxic/sulfuric acid energized microbial communities which have possibly been isolated for short geological time periods to some degree. The fact that water connects these with the surface aerobic populations through cave streams or dry surface transport makes this a ongoing partial interacting set of communities, with a very restricted source of energy production.
Sulfur and sulfuric acid as a energy process, and the combination of cave formation by the conversion of limestone or other minerals as a primary chain of reliance, and the apparent preference of the shapes, with the limited numbers of types as record-setting.
Abstract results 1.
Abstract results 2.
Source of the links, research description.
Current article, general description of the research groups, persons, source of the above links.

Dana Author Profile Page



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PostPosted: April 17, 2009 2:13 PM 

Requires Real Windows Player for this video Embedded video from CNN Video">short clip about the microbes living below a glacier which preference the available Iron at the area.

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PostPosted: April 17, 2009 2:22 PM 

Link test:
Embedded video from CNN Video

Dana Author Profile Page



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PostPosted: April 17, 2009 2:54 PM 

To be a good social host, should blame myself for the two botched links above. Neither work correctly, and you can obtain the reportage from a search on either Real Windows Player or CNN Video by entering 'Iron microbes' or more detail.
I never use Real Player, in favor of independent software video players, so it was an experiment in big provider services.
A Scientific American written version of the ressurected story, and a pod-cast, which was perhaps updated somewhat during the repeated news reports in recent times.


MPJ


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PostPosted: April 17, 2009 5:10 PM 

I was waiting for you to post that here Smile
This news gone trough german press today as well but i havnt read any english sources about that yet.

this link is working quite good:
[link]

thats realy the kind of microbes that maybe could also live on current Mars and some moons like Europa or Ganymede if there is a hidden ocean as well.

btw the closeup of my recent flowing feature posted in another topic does look kind of red as well with IAS auto color adjustment:
http://olympweb.mine.nu/forums/marsphotos/download/file.php?mode=view&id=133&sid=31349c51cef003d081d6aa0d4c7a8d4b

thats not unusual on Mars though Smile

Dana Author Profile Page



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PostPosted: April 18, 2009 1:05 PM 

I appreciate you saving that linked subject for me, MPJ. I notice there was a video link on the written text in the article about the Iron utilizing microbes. The fact that the dark streaks are concentrated at the mid-range elevation of the polar ice scarps, near the ice and water saturated solids mixture Lower Unit upper limit, may be very suggestive of action either chemical or biological in progress. The action bringing material to the front limit of the dark streaks is consistent over time, and exceeds the movement of the surrounding exposures which are not streaking. As many still hold that the area cannot sustain very cold liquids for a motivating force, and no chemistry processes causing horizontal movement has been discussed to explain this dark streaking, I am left to think about the obvious biological possibilities.
There is the possibility of a dark layer at a past major climatic shift during a deposition period, but that period would have to have been very short term, very rapid in full shift, and a deposition which was singular only. A KT boundary type layer event possibly?

.........

In your second link, of the volcanic area, I could see very shallow medium sized craters or circular domains which are crossed by these dark streaks. The circular features are viewable both in the light toned surface areas, and in the parts covered by the dark streaks. This would reduce the chances that the dark streaks are based upon removal of a dust cover.

MPJ


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PostPosted: May 5, 2009 11:01 AM 

I came across this article (MSNBC 2009) recently and think this maybe interesting for this topic:

Avoiding the 'F word' on Mars

It covers the "hot potato" fossils on Mars and includes latest rover results and observations as well. This articles links are quite interesting as well.

MPJ


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PostPosted: May 13, 2009 11:18 AM 

Ancient earth biology-traces and a connection to Mars:

Earliest animal traces solve time-gap mystery

The last paragraph labeled Mars too? is especialy interesting.

ramm


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PostPosted: November 19, 2010 10:38 PM 

nice one mpj

Dana Johnson


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PostPosted: June 9, 2013 9:51 AM 

Hundreds of related links are missing in the interim, and the 'search' and access in this blog has been compromised, so, here is a current link which will serve as a update in 2013, and the topic will be cross-linked to a current topic, to allow possible access to early topics on this blog. The best links were presented between 2003 and 2010 in various topics, yet the index to those is now missing or degraded. That damage should be corrected.

Fungal fossils in subseafloor basalts on Earth. From 2012, biogeosciences.net

http://www.biogeosciences.net/9/3625/2012/bg-9-3625-2012.pdf

An open access article of value, related to the micro and macro imaging of Mars soil and bedrock exposures.
Very important source of imaging of the 'string of pearls' structures that seem to be less well displayed in these Earth based examples than the Mars rover examples we were displaying from the MER results.

These examples were not simple surface sea life, they were shallow to deep drill extracted as samples of sub-surface rock encased basalt vesicle content from various Earth sea and ocean basins.




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