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Its out;evidence from orbit seems to show that marsquakes are still active on Mars!Evidence for this are the presence of a serious of a chain of pitholes similar to ones found in Iceland on Earth which have developed along a fault line and have been there since only 1975!What we need now are seismic probes to corroborate those findings!Bad news for those who attributed methane to life on Mars?Maybe!!For full article go to space.com
One thing's for sure,there wont be any diversions as to what the Martian Holy Grail is as on Earth!Ask Da Vinci.
The more I read about Mars the more i'm convinced that its a planet that held potential habitats for life to develop but somehow got stalled by the major climate change caused by loss of magnetic field and consequently loss of its atmosphere.At this time that this major change happened ,that is, about 3.8 billion yeras ago,life could not have devekloped further than microbial level,assuming that life would have taken the same time scale to develop as on Earth.From time to time there could have been major water events caused by melting of groundice by volcanic activity or meteoritic impacts but these were temporary phenomena possibly causing the huge floods we still see today in orbital pics!Ofcourse if life ever got a hold on Mars ,i would still think its there somewhere underground or in polar regions.
I dont know if anyone knows exactly where the water relaterd minerals have been found inside Mariner valley...the valley is huge so a rover lander would have a lot of space where to move and far from being trapped as someone suggested!Anyways,probably Meridiani remains the easiest target and perhaps the most accessible site for MSL to land..there's a lot of area in the region that Opportunity wont be able to cover..i'm sure.JPL would have better control to land MSL at a precise site due to the use of scramjet rather then airbags!
Given the new findings from Mars express that methane and water vapour concentrations seem to overlap in regions such as Arabia,Elysium and Arcadia,,would it be logical to send probes to investigate these areas from the surface..what i see most fit are seismic probes and perhaps life detectors,provided that infrared studies of these sites render such landing areas low risk compared with the great scientific value of landing in these areas!
Recent studies and i think that Hartmann himself has hinted this in his book about Mars is that the planet could be slowly emerging fom an ice age !any comments about this matter?
just hope the parachute system on huygens doesnt suffer the same faith as Genesis probe ???
I would bet that Nasa may be considering as Mariner valley as a potential future landing site for the Mars lab due to launch in 2009...i know its still early considering that next years Mars orbiter could reveal new sites for landing! ???
It seems that mineral jerosite (hope its written correctly!) has been found in areas of Mariner valley..other pics suggest sedimentary deposits in other areas such as Holden crater,,,well..mapping the areas containing minerals that could be linked to a water story on Mars would give us an idea as to where the presumed lake or ocean was on the planet or locations as to where the water system if any,on Mars back in the Noachian period!Mars Express is doing a lot of progress as well as i expect that to be supported by the operation of Mars Reconnossance orbiter in 2 years time.Exciting times in the exploration of the RED planet!
Should religion be part of a new Martian society and to what extent is it allowed to influence martian politics?Any comments would be appreciated!
Looking again at those pics of Titan makes me wonder if those bright features are low lying clouds rather than surface features!!What u think Cindy? ???
The fact that clouds made up up of big particles have been detected over Titans south pole is suggestive of a dynamic atmosphere,meaning?I understand that there may be evaporation?sublimation of methane into clouds at 15km altitude above the surface with precipitation.Now whether methane reaches the surface as liquid or solid is the question!All this seems to fit with the fact that it is southern summer over Titans south pole. ??? It would be interesting to have a view of the northern hemisphere to compare between the poles and get an idea of seasonal effects on weather!
Single cloud over Titans south pole..the size of Arizona..dark areas seem to be pure water ice whereas the brighter areas seem to be mixed with hydrocarbons..quite the contrary to what scientists had previously thought!It turns out Titan is more puzzling then previously thought! ???
Welcome to Saturn guys..enjoy the ride!
Just out today,they've detected very high winds in Titans upper atmosphere!!Is it worse for Huygens probe as it descends into Titan??Who knows?Fingers crossed ???
It would be a big disappointment if the Columbia hils turn out to be a big chunk of lava deposit instead of the much awaited water deposited sediments we were all hoping to see!!
well...havent commented for a while in this forum but i bet that Spirit will rise to Opportunity's status in finding evidence of significant water after examining those rock outcrops on the Columbia hills As for Opportunity,i think we'll have to wait for some time for the rover to get to anywhere near the dune fields at the bottom of E ndurance crater;i would think that Nasa will send the rover to the rock outcrops first and then leave the crater again to go inside the crater later on towards the end of the mission!
No comment regarding TES results from Spirit rover indicating possible make up of Columbia hills as yet!Any comments?? ???
Cassioli..what the hell is that...smoke??
I've been following the discussion regarding colour pics of Mars at Gusev...in fact i'm really quite puzzled myself as to the true look of this martian panorama.Are the plains ahead really green..even some roocks seem to be green!As regard dune fields inside Bonneville crater,do those look green as i've seen in some pics???Any thoughts? ???
Those hills look so appealing..as if we're there walking in that direction...looking forward for better pics as the rover moves further closer in. Even the Gusev crater rim is visible!
Well,it looks like Hugens probe will have to have a change in its trajectory if Titans atmosphere has indeed expanded since last measured by Voyager 1...the fact that Titan is 5% closer to the sun in 2003 then during the Voyager encounter in 1980,looks to be the reason why Titans atmosphere is more massive due to increased solar heating!
Mountains on Mars..i agree they are shield volcanoes....what about the mountain chain south of Mariner valley..are these due to past tectonic activity on Mars???Magnetic maps seem to show the presence of a spreading centre very much like a mid oceanic ridge on Earth in very early Mars history before magnetic field died out....
I am no geologist or planetary scientist but i'm still not convinced that Meridiani held a salty lake or sea...i liken it more to an area where geysers flourished...any thoughts about this?
Yes,i was referring to your post Cindy...i'm just hopeful as all of you here that Huygens probe will be a success after all these years waiting to get to see what Titan looks like!