|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
"Mars Water" - The NASA PAO in action
This annoyed me so much, that I thought it deserves a separate thread
due to its implications in regards to the NASA PAO: http://www.nasa.gov/mission_pages/ma...-20061206.html This isn't the first time we've heard the "water flowing on Mars" story. Back in 2000, NASA was showing pictures of gullies in craters taken by Mars Global Surveyor and saying they were caused by liquid water flows: http://archives.cnn.com/2000/TECH/sp....03/index.html Then afterwards, dissenting voices arose to this interpretation: http://www.spacedaily.com/news/mars-...ence-00k2.html http://unisci.com/stories/20012/0402013.htm http://www.spacedaily.com/news/mars-...ience-02b.html But Mars Global Surveyor has now croaked, and as a going away present, NASA has given it credit for finding the same thing again: http://www.spaceref.com/news/viewpr.html?pid=21407 Even though in all likelihood all it's found are dry ice or soil deposits from subsurface liquid CO2 escaping. Notice how liquid CO2 doesn't even get mentioned in the press release? Notice how the new "water" flows are still coming out from deep underground on crater walls...where liquid CO2 could exist? And at latitudes above 30 degrees, where liquid water would have a harder time existing than at the warmer Martian equator? Pat |
#2
|
|||
|
|||
"Mars Water" - The NASA PAO in action
|
#3
|
|||
|
|||
"Mars Water" - The NASA PAO in action
Dave Michelson wrote: Pat Flannery wrote: This annoyed me so much, that I thought it deserves a separate thread due to its implications in regards to the NASA PAO Pat, Neither Ed Weiler nor Mike Malin, who were prominently quoted in the 2000 piece, are members of the PAO. No, that's not what concerns me. What concerns me is that NASA is doing two things: 1.) Backing a big deal about this "new" discovery in their latest press release, and making no reference to the 2000 release on the same subject. The only "new" thing here was photographic proof of the phenomena occurring in the past seven years, not the phenomena itself. And the 2000 press release stated they thought this was an on-going process. 2.) Completely ignoring the dissenting views about their interpretation of the formation process for the gullies put forward in the 2000 press release. That's not how science is supposed to work; they should have at least stated in the new press release that there is an alternative to water that could also explain this phenomena, and particularly given the high latitudes and low temperatures of where these flows were found, probably fits them far better than water - which requires some sort of unknown brine solution or subsurface heating to keep it liquid at the observed temperatures. If it's a brine, I'd like to see it reproduced in a laboratory; as it might be the best, most ecologically friendly antifreeze ever made. If there is some sort of subsurface heating going on, it's odd it mainly confines itself to only those regions above 30 degrees latitude. You'd expect it to vary by geology and terrain, not by latitude. It's also odd that only a few months back, NASA was jumping up and down regarding subsurface CO2 eruptions at the Martian pole blasting huge pits in the ground every spring, yet seems to think that CO2 plays no possible part in this new phenomena. I think it is no coincidence that the mean temperature of Mars (-63 C), the melting point of solid carbon dioxide under pressure (-57 C), and its sublimation point in vacuum (-78 C) are all within 20 C of each other, with the liquid under pressure and sublimation temperatures in vacuum neatly straddling the mean temperature of Mars. This planet was _made_ for carbon dioxide in gaseous, liquid, and solid forms. Pat |
#4
|
|||
|
|||
"Mars Water" - The NASA PAO in action
"kT" wrote in message
Notice how liquid CO2 doesn't even get mentioned in the press release? Notice how the new "water" flows are still coming out from deep underground on crater walls...where liquid CO2 could exist? And at latitudes above 30 degrees, where liquid water would have a harder time existing than at the warmer Martian equator? Yawn. Another usenet crackpot. I agree, NASA is grandstanding again. But the CO2 theory is dead, crackpot. Get over it. There should be a little water on Mars, perhaps 0.1% of what's otherwise mostly dry ice could be that of plain old h2o. What's the Mars core temperature? If it isn't so old and thus frozen to the core, chances are that sequested water or brines containing h2o should coexist underground. There could even be a co2/h2o composite of icy dry ice, just not upon the near vacuum of that Mars surface. How much tonnage of dry ice is there to behold? After all, 0.1% is still a great amount of potential h2o. - Brad Guth -- Posted via Mailgate.ORG Server - http://www.Mailgate.ORG |
#5
|
|||
|
|||
"Mars Water" - The NASA PAO in action
Pat Flannery wrote:
This annoyed me so much, that I thought it deserves a separate thread due to its implications in regards to the NASA PAO: http://www.nasa.gov/mission_pages/ma...-20061206.html This isn't the first time we've heard the "water flowing on Mars" story. Back in 2000, NASA was showing pictures of gullies in craters taken by Mars Global Surveyor and saying they were caused by liquid water flows: http://archives.cnn.com/2000/TECH/sp....03/index.html Then afterwards, dissenting voices arose to this interpretation: http://www.spacedaily.com/news/mars-...ence-00k2.html http://unisci.com/stories/20012/0402013.htm http://www.spacedaily.com/news/mars-...ience-02b.html But Mars Global Surveyor has now croaked, and as a going away present, NASA has given it credit for finding the same thing again: http://www.spaceref.com/news/viewpr.html?pid=21407 Even though in all likelihood all it's found are dry ice or soil deposits from subsurface liquid CO2 escaping. Oh, give us a break, crackpot. Nick Hoffman is a complete fraud. Notice how liquid CO2 doesn't even get mentioned in the press release? Notice how the new "water" flows are still coming out from deep underground on crater walls...where liquid CO2 could exist? And at latitudes above 30 degrees, where liquid water would have a harder time existing than at the warmer Martian equator? Yawn. Another usenet crackpot. I agree, NASA is grandstanding again. But the CO2 theory is dead, crackpot. Get over it. http://cosmic.lifeformorg |
#6
|
|||
|
|||
"Mars Water" - The NASA PAO in action
"Pat Flannery" wrote in message ... This annoyed me so much, that I thought it deserves a separate thread due to its implications in regards to the NASA PAO: http://www.nasa.gov/mission_pages/ma...-20061206.html I've been keeping up with the recent water flow on Mars topic since Opportunity landed. And it appears all the geological evidence shows a planet that has had extensive underground water/ice. Which should periodically flow to the surface as ice ages wax and wane. One observation I found some time ago convinced me that even today water finds a way here and there to bubble up. Look carefully at these two pictures below. Especially the delicate /erosion pattern/ seen in the.....shadows... of each picture. They both show a mudpot and the characteristic soil erosion along the edge of the mudpot. The mars pic is on the Endurance crater wall about half way down, so it's at about a ten degree slope causing the mudpot to be elongated and shallow. But it's still a mudpot Look at the shadows, this is water erosion. And considering the delicate nature of the erosion, and the weather on Mars, this is ....recent water erosion imho. Yellowstone mudpot http://www.nps.gov/yell/slidefile/th...ages/05402.jpg Endurance mudpot http://qt.exploratorium.edu/mars/opp...1P2397R1M1.JPG I think the evidence will show the Mars water didn't evaporate into space so much as going underground. Most of it could still be there. And the research shows only twenty or thirty meters underground should be enough to protect and store water ice near the equator. Mars could conceivably have large swings in temperatures as ice ages wax and wane due to its complicated orbit. Mars could warm considerably in a short time and water could fill in canyons and craters all over. Even with the current conditions in the atmosphere, ice capped lakes could exist in the surface of Mars today since they're replenished from underground. Underground springs would replenish the lakes faster than the ice cover would ablate away. I've seen counltess crater and canyons with unusual dunes on the bottom exactly outlining where water would stand. And these dunes look exactly like water ripples. Look at the unusual dunes at the bottom of Endurance and Victoria. Look at this canyon. The dunes go around corners, obviously not following the prevailing wind. And also exactly outlining where water would stand if water were there. These are obviously water ripples, which look almost exactly like wind ripples. I think many dunes that appear wind formed are actually water formed. The two types are virtually identicle. http://marsprogram.jpl.nasa.gov/gall...Nirgal_i2.html A few more floor dunes http://www.msss.com/mars_images/moc/2003/11/05/ http://www.msss.com/mars_images/moc/2003/10/30/ http://www.msss.com/mars_images/moc/2003/10/05/ http://www.msss.com/mars_images/moc/.../18/index.html And look at this incredible pic. A valley with dark Meridiani like soil exactly outlining where water would stand if it were there. And even a dust devil in the pic showing the dunes or furrows are cemented in place. http://marsprogram.jpl.nasa.gov/gall.../PIA02398.html This isn't the first time we've heard the "water flowing on Mars" story. Back in 2000, NASA was showing pictures of gullies in craters taken by Mars Global Surveyor and saying they were caused by liquid water flows: http://archives.cnn.com/2000/TECH/sp....03/index.html Then afterwards, dissenting voices arose to this interpretation: http://www.spacedaily.com/news/mars-...ence-00k2.html http://unisci.com/stories/20012/0402013.htm http://www.spacedaily.com/news/mars-...ience-02b.html But Mars Global Surveyor has now croaked, and as a going away present, NASA has given it credit for finding the same thing again: http://www.spaceref.com/news/viewpr.html?pid=21407 Even though in all likelihood all it's found are dry ice or soil deposits from subsurface liquid CO2 escaping. Notice how liquid CO2 doesn't even get mentioned in the press release? Notice how the new "water" flows are still coming out from deep underground on crater walls...where liquid CO2 could exist? And at latitudes above 30 degrees, where liquid water would have a harder time existing than at the warmer Martian equator? Pat |
#7
|
|||
|
|||
"Mars Water" - The NASA PAO in action
Pat Flannery wrote:
Dave Michelson wrote: Pat Flannery wrote: This annoyed me so much, that I thought it deserves a separate thread due to its implications in regards to the NASA PAO Pat, Neither Ed Weiler nor Mike Malin, who were prominently quoted in the 2000 piece, are members of the PAO. No, that's not what concerns me... What's really interesting about all this, is that when people saw images of the surface of Titan resembling Earth, with mountain river valleys running down to a delta near an "ocean", nobody had any trouble getting their heads around the idea of a meteorological cycle and surface erosion based on liquid methane* instead of H2O. On Enceladus, no problem "getting it" when reading about how it's cryovolcanic as opposed to a regular old "hot" volcanic world. So, based on what I know about Mars going all the way back to junior high school, I'm able to let go of all the recently-flowing liquid water hype and grok the idea that the Martian meteorological cycle/surface erosion/flow-channel and valley cutting would be based on liquid CO2, even as exciting as the discovery of liquid water on Mars would be (iirc, the MER team's discussion of the one-time presence of liquid water at Meridiani was much more realistic; they didn't claim, in effect, that the last flood at Meridiani subsided just before Opportunity landed there). I suppose NASA could've been more guardedly optimistic and pointed out how these images showed evidence of the recent action of flowing _liquid_ -- not necessarily water -- on the crater walls, and that the jury's still out on recent liquid water, but I guess that wouldn't have made Matt Lauer wet his pants so thoroughly at the top of NBC "Today" this morning. I actually got a kind of a sick kick out of this; by the time "Today" went on the air, I'd already seen the press release and the images and read a good portion of the thread on this group, including Flannery's pointing out if _any_ liquid was flowing recently enough to cut those channels, it _had_ to be CO2. *but this business of water ice being so solidly deep-frozen that it behaves like rock -- now, _that_ was a pretty intense concept. -- .. "Though I could not caution all, I yet may warn a few: Don't lend your hand to raise no flag atop no ship of fools!" --grateful dead. __________________________________________________ _____________ Mike Flugennock, flugennock at sinkers dot org "Mikey'zine": dubya dubya dubya dot sinkers dot org |
#8
|
|||
|
|||
"Mars Water" - The NASA PAO in action
On Thu, 07 Dec 2006 22:33:19 -0500, mike flugennock wrote:
I suppose NASA could've been more guardedly optimistic and pointed out how these images showed evidence of the recent action of flowing _liquid_ -- not necessarily water -- on the crater walls, and that the jury's still out on recent liquid water, Oddly enough, the BBC's report included the probability that it was CO2, rather than H2O. The New York Times just reported it as evidence of recently flowing water. but I guess that wouldn't have made Matt Lauer wet his pants so thoroughly at the top of NBC "Today" this morning. But of course that may not have been urine on his pants, but rather liquified CO2 as well Dale |
#9
|
|||
|
|||
"Mars Water" - The NASA PAO in action
Dale wrote:
On Thu, 07 Dec 2006 22:33:19 -0500, mike flugennock wrote: I suppose NASA could've been more guardedly optimistic and pointed out how these images showed evidence of the recent action of flowing _liquid_ -- not necessarily water -- on the crater walls, and that the jury's still out on recent liquid water, Oddly enough, the BBC's report included the probability that it was CO2, rather than H2O. The New York Times just reported it as evidence of recently flowing water... And, thanks to the Beeb, again...interesting though, as I understand that their tv science reporting has really jumped the shark lately. but I guess that wouldn't have made Matt Lauer wet his pants so thoroughly at the top of NBC "Today" this morning. But of course that may not have been urine on his pants, but rather liquified CO2 as well But, wouldn't all of us out in TV Land have seen the clouds of sublimation vapor rising from the area of Matt's pants? -- .. "Though I could not caution all, I yet may warn a few: Don't lend your hand to raise no flag atop no ship of fools!" --grateful dead. __________________________________________________ _____________ Mike Flugennock, flugennock at sinkers dot org "Mikey'zine": dubya dubya dubya dot sinkers dot org |
#10
|
|||
|
|||
"Mars Water" - The NASA PAO in action
mike flugennock wrote: I suppose NASA could've been more guardedly optimistic and pointed out how these images showed evidence of the recent action of flowing _liquid_ -- not necessarily water -- on the crater walls, and that the jury's still out on recent liquid water, but I guess that wouldn't have made Matt Lauer wet his pants so thoroughly at the top of NBC "Today" this morning. I actually got a kind of a sick kick out of this; by the time "Today" went on the air, I'd already seen the press release and the images and read a good portion of the thread on this group, including Flannery's pointing out if _any_ liquid was flowing recently enough to cut those channels, it _had_ to be CO2. That's what hit me as so odd about the press release; if they had said it was liquid that _may_ have been water, it would have been iffy and optimistic, but not outright wrong....but they went out of their way to state it was water and didn't even mention it could also be liquid CO2, and that was completely, and purposely, misleading. *but this business of water ice being so solidly deep-frozen that it behaves like rock -- now, _that_ was a pretty intense concept. An ice/soil mixture that is deeply frozen is an incredibly tough substance that behaves a lot like concrete. I had the brilliant idea of going fossil hunting in winter a decade or so back, so as to avoid bugs and ground covering vegetation. Trying to free a rock from the frozen ground was virtually impossible, you'd have had to use a hammer and chisel or dynamite to free the thing from the frozen soil. Pat |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
After Action Report: "Warplane" Part 4 (Stealth) | Paul Suhler | History | 41 | December 19th 06 12:18 AM |
"Mars Water" - The NASA PAO in action | Pat Flannery | Policy | 6 | December 8th 06 01:01 PM |