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![]() Agent Smith wrote: I suppose that Mercury's iron composition must have been deduced by finding iron lines with reflection spectroscopy. Mass versus size would also be indicative of composition. Because of this, I would think that it's large, metallic heat conduction would be enough to heat the entire planet, including the shadowed edges around crater rims, near the poles. Thus it wouldn't make any sense to look for ice in those regions. You'd have to balance out the heat conduction of iron against the radiative effect of heat being lost to the sky in the shadow areas and on the unilluminated side of the planet in its very slow rotation. Another thing is that the exterior may be a layer of several-meter-thick meteoric and cometary debris unrelated to the interior of the planet in its composition, and serving as a insulator over the main iron-rich planetary composition proper, cutting down its ability to both absorb and radiate heat. I think that it makes sense to look for watery (actually icy) zones in the solar system, in the search for life. However, I honestly think that NASA is making themselves look bad in the eyes of more sensible scientists, by blowing the "hunt for life" waay out of proportion. I just had some loser tell me that there is no such thing as a habitable zone around the sun, because bacteria might be hanging on by a thread, in extreme environments. We should search for life, but it's a terrible idea to keep reporting wild ideas that haven't been properly vetted trough calmer minds. Sometimes they even report success, as with the bacteria-shaped rock nodules that were incorrectly reported as proof of bacterial life on Mars. They are still trying to recover from the negative publicity of that one. At the moment they are "water mad" about Mars, hinting at some sort of subsurface liquid water flows, even though there is apparently no volcanic heat source to keep the water liquid, and the surface and subsurface temps are ideal for the triple state of CO2, with only pressure being needed to turn CO2 ice into liquid CO2 - which the images of the "water flows" show as they emerge from the sides of craters and escarpments at a considerable depth beneath the surface. The much-vaunted "blueberries" turned out to be meteor impact splash instead of mineral concretions like "cave pearls". Pat |
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Agent Smith wrote:
I think that it makes sense to look for watery (actually icy) zones in the solar system, in the search for life. However, I honestly think that NASA is making themselves look bad in the eyes of more sensible scientists, by blowing the "hunt for life" waay out of proportion. I just had some loser tell me that there is no such thing as a habitable zone around the sun, because bacteria might be hanging on by a thread, in extreme environments. We should search for life, but it's a terrible idea to keep reporting wild ideas that haven't been properly vetted trough calmer minds. Sometimes they even report success, as with the bacteria-shaped rock nodules that were incorrectly reported as proof of bacterial life on Mars. If NASA keeps telling people that life exists off the earth, before they've got **rock solid** evidence for it, they're just going to make themselves look like The Boys Who Cry Wolf. It's no wonder Christians are incapable of understanding science. One of their main complaints is that scientists keep publishing incorrect results, and retracting them later. That's a very superficial interpretation of the history of this subject. The fact of the matter is that NASA wasn't planning to report the "Mars bacteria" findings when they did. They were going to subject the story to a lot more internal review. But the story leaked to the media and a journal was going to run with it, and other media outlets began to suspect a NASA coverup. NASA hastily convened a press conference to report the findings to try to head that off. NASA can't win here. They can either keep preliminary findings quiet while under internal review and be accused of a coverup, or they can be open and be accused of crying wolf. They have chosen the latter strategy, and in my opinion, they were entirely correct to do so. |
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![]() I'm also disappointed. Just little old me wondering, as to why our spendy MESSENGER color is being intentionally turned off, and as to why their dynamic range remains as so pathetic? http://messenger.jhuapl.edu/gallery/sciencePhotos/ http://messenger.jhuapl.edu/gallery/...p?gallery_id=2 http://messenger.jhuapl.edu/gallery/...108821596M.png http://messenger.jhuapl.edu/gallery/...108826105M.png Here's that one of Venus that's about as wussy pastel worth of color and of pathetic DR as you can possibly get. http://messenger.jhuapl.edu/gallery/...=2&image_id=88 http://messenger.jhuapl.edu/gallery/...ch%20Image.jpg Remember the Earth flyby, where our moon was out of frame and otherwise either too physically dark or invisible, however the pastel color image of Earth looked very nifty. http://messenger.jhuapl.edu/the_miss...galapagos.html http://messenger.jhuapl.edu/the_miss...lapagos_lg.jpg http://www.jhuapl.edu/newscenter/pre...005/050826.asp - Brad Guth On Jan 16, 8:37 pm, Agent Smith agent-sm...@two-blocks-on-your- left.com wrote: kT wrote : Agent Smith wrote: After searching for two years for a copy of the September 1975 issue of Scientific American, which had the Mariner photos ofMercury, suddenly I find out that there is a brand new satellite arriving at the planet, right now. So all my effort was wasted, and soon we'll be flooded with photos infinitely better than the ones I just busted my butt to find. ![]() I just checked their website : http://messenger.jhuapl.edu/mer_flyby1.html This isn't that kind of mission, it will be quite a while before you get 'flooded' with photos. I remember the earlyMercuryflybys, we were all amazed when some guy realized they were going to get two more flybys for free, does anyone happen to remember who that was? That's a real story. That was what really started the whole multiple flyby craze. They're all photographic missions, right? Here's the latest photo from this week's fly-by, http://www.nasa.gov/mission_pages/me...ain/index.html, and the resolution looks quite good, but I still can't tell the difference betweenMercuryand the Moon. ![]() |
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They did it just to upset you...
On Jan 18, 7:49*am, BradGuth wrote: I'm also disappointed. Just little old me wondering, as to why our spendy MESSENGER color is being intentionally turned off, and as to why their dynamic range remains as so pathetic? |
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After all this time, and of our hard earned loot spent, I'm actually
rather disappointed in NASA's MESSENGER. Are we ever going to see the full scope and depth of our digital images, or as limited as to whatever they see fit to share? Perhaps it's just little old me deductively wondering, as to exactly why our spendy MESSENGER color imaging potential is being intentionally turned off or excluded from public review, and as to why their CCD dynamic range remains as so dismal. http://messenger.jhuapl.edu/gallery/sciencePhotos/ http://messenger.jhuapl.edu/gallery/...p?gallery_id=2 http://messenger.jhuapl.edu/gallery/...108821596M.png http://messenger.jhuapl.edu/gallery/...108826105M.png http://messenger.jhuapl.edu/gallery/...26040M_45M.jpg Thanks to our "no kid left behind" policy, as of prior to CCD camera imaging perhaps all of 0.1% of Americans even knew of what photographic spectrum sensitivity and the associated DR(dynamic range) of B&W or color film even meant. Since the advent of commercial/ consumer CCD cameras and the dumbing down of America, I'd say that fewer than 0.0001% (that's one out of a million) of our supposedly educated population of mostly snookered and thus easily dumbfounded village idiots have so much as a freaking clue as to what either factor of spectrum sensitivity or much less that of what DR means. Of course this is perfectly good news for those of our cloak and dagger Skull and Bones, as well as for those faith-based rusemasters within our NASA, and especially on behalf of those unfiltered Apollo Kodak moments that somehow never managed to get any such blue saturated images of our naked and physically dark moon like those recently accomplished by China and Japan with their quality bandpass filtered optics. Here's that other one of Venus that's about as wussy/pastel worth of color and pathetic DR as you can possibly get, and still having just enough to call it color, especially weird since most cell phone cameras would have taken a better color image. http://messenger.jhuapl.edu/gallery/...=2&image_id=88 http://messenger.jhuapl.edu/gallery/...ch%20Image.jpg Remember the Earth flyby, whereas our color spectrum corrected as a dark-golden-brown moon was intentionally kept out of frame and otherwise as either too physically dark or perhaps it was invisible due to their intentionally limited DR usage, however the pastel color and/or dynamic range limited image of Earth looked still quite nifty. http://messenger.jhuapl.edu/the_miss...galapagos.html http://messenger.jhuapl.edu/the_miss...lapagos_lg.jpg http://www.jhuapl.edu/newscenter/pre...005/050826.asp Is this lack of color imaging because of Mercury being so gush darn moon like, with similar crater upon crater terrain and a low amount of albedo, but otherwise offering a deposited and local mineral rich geology, and subsequently colorful surface as imaged by those spendy mirror optics, whereas at least one of which having an extremely good set of narrow bandpass filters and/or spectrum cutoff filters, and with each of those CCD imagers having such terrific DR(dynamic range of at the very least 4X film and that's not even including the extra +/- skew of their CCD DR). - Brad Guth |
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Apparently "Mercury's unseen side now seen!" is only available in
those colors of gray. After all this time, and of our hard earned loot spent, I'm actually rather disappointed in NASA's MESSENGER. Are we ever going to see the full visible spectrum scope and photographic color depth and contrast of our digital images, or merely as limited as to whatever pixels they see fit to share in B&W and of such limited DR to boot? Perhaps it's just little old me deductively wondering, as to exactly why our spendy MESSENGER color imaging potential is being intentionally turned off or excluded from public review, and as to why their CCD dynamic range remains as so dismal. http://messenger.jhuapl.edu/gallery/sciencePhotos/ http://messenger.jhuapl.edu/gallery/...p?gallery_id=2 http://messenger.jhuapl.edu/gallery/...108821596M.png http://messenger.jhuapl.edu/gallery/...108826105M.png http://messenger.jhuapl.edu/gallery/...26040M_45M.jpg Thanks to our "no kid left behind" policy, as of prior to CCD camera imaging perhaps all of 0.1% of Americans even knew of what photographic spectrum sensitivity and the associated DR(dynamic range) of B&W or color film even meant. Since the advent of commercial/ consumer CCD cameras and the dumbing down of America, I'd say that fewer than 0.0001% (that's one out of a million) of our supposedly educated population of mostly snookered and thus easily dumbfounded village idiots have so much as a freaking clue as to what either factor of spectrum sensitivity or much less that of what DR means. Of course this is perfectly good news for those of our cloak and dagger Skull and Bones, as well as for those faith-based rusemasters within our NASA, and especially on behalf of those unfiltered Apollo Kodak moments that somehow never managed to get any such blue saturated images of our naked and physically dark moon like those recently accomplished by China and Japan with their quality bandpass filtered optics. Here's that other one of Venus that's about as wussy/pastel worth of color and pathetic DR as you can possibly get, and still having just enough to call it color, especially weird since most cell phone cameras would have taken a better color image. http://messenger.jhuapl.edu/gallery/...=2&image_id=88 http://messenger.jhuapl.edu/gallery/...ch%20Image.jpg Remember the Earth flyby, whereas our color spectrum corrected as a dark-golden-brown moon was intentionally kept out of frame and otherwise as either too physically dark or perhaps it was invisible due to their intentionally limited DR usage, however the pastel color and/or dynamic range limited image of Earth looked still quite nifty. http://messenger.jhuapl.edu/the_miss...galapagos.html http://messenger.jhuapl.edu/the_miss...lapagos_lg.jpg http://www.jhuapl.edu/newscenter/pre...005/050826.asp Is this lack of color imaging because of Mercury being so gush darn moon like, with similar crater upon crater terrain and a low amount of albedo, but otherwise offering a deposited and local mineral rich geology, and subsequently colorful surface as imaged by those spendy mirror optics, whereas at least one of which having an extremely good set of narrow bandpass filters and/or spectrum cutoff filters, and with each of those CCD imagers having such terrific DR(dynamic range of at the very least 4X film and that's not even including the extra +/- skew of their CCD DR). Perhaps MESSENGER's color imaging potential can be fixed while on the fly, prior to eventually returning for their full orbital mission of mapping Mercury gets under way. - Brad Guth |
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In article 02,
Agent Smith wrote: After searching for two years for a copy of the September 1975 issue of Scientific American, which had the Mariner photos of Mercury, suddenly I find out that there is a brand new satellite arriving at the planet, right now. So all my effort was wasted, Not at all! The past history is always interesting! and soon we'll be flooded with photos infinitely better than the ones I just busted my butt to find. ![]() The new photos won't be THAT much better! You cannot expect them to resolve individual atoms on the surface of Mercory, for instance. So while they can be expected to be much better, they're still "only" finitely better..... -- ---------------------------------------------------------------- Paul Schlyter, Grev Turegatan 40, SE-114 38 Stockholm, SWEDEN e-mail: pausch at stockholm dot bostream dot se WWW: http://stjarnhimlen.se/ |
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On Tue, 15 Jan 2008 20:10:45 GMT, Agent Smith
wrote: (Paul Schlyter) wrote in : In article 02, Agent Smith wrote: After searching for two years for a copy of the September 1975 issue of Scientific American, which had the Mariner photos of Mercury, suddenly I find out that there is a brand new satellite arriving at the planet, right now. So all my effort was wasted, Not at all! The past history is always interesting! and soon we'll be flooded with photos infinitely better than the ones I just busted my butt to find. ![]() The new photos won't be THAT much better! You cannot expect them to resolve individual atoms on the surface of Mercory, for instance. Whaaaa....? Why, I only sign my IRS check because I'm certain that, on Mercury, NASA will find the specific atom of Plutonium that contains the universe which Archimedes Plutonium has shown to contain a species just like ours. I'm sooo disappointed. ![]() But I must say that I do like your sci-fi imagery. Now you've got me pondering a hypothetical imaging system with a tunnelling microscope as an extra stage, connected to a high-res optical system, that can do what you just said. Good work Felix; I'm putting you in for a medal. Send me three grand, and I'll tell my lawyer to submit the patent application, in both our names. ![]() So while they can be expected to be much better, they're still "only" finitely better..... Just hyperbole. I read a lot of senses-shattering literature in my youth, and it's colored my writing style. By "infinitely," of course I mean "as much better as today's digital technology is from that of the 70's." Raise '2' to the exponent of the the number of eighteen month Moore cycles since '75, and you'll get my definition of what infinity is, as calculated by Ganow's Hottentott scale, described in "One, Two, Three, Infinity." Counting slowly in my head, by '1's, that's as far as I can go before my mind wanders. ![]() 2 years of searching for the Sept. 1975 issue of Scientific American? I found it in 30 seconds on a google search. http://www.biblio.com/details.php?dcx=131737915&aid=frg Maybe the price is higher than you care for, but it's out there. |
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