|
|
|
Thread Tools | Display Modes |
#11
|
|||
|
|||
...First Microscopic Images....It's gotta be Water-Ice!
jonathan wrote:
"Pat Flannery" wrote in message lephone... George wrote: NASA said today that the hole is directly beneath a thruster, and so is probably the result of a thruster firing when the craft landed. They also said that that might indicate that the slab is ice. Or dry ice... I took a Bernz-O-Matic torch to water ice with very poor results indeed, and the total time of the landing engine's impinging on the Martian surface would be be very low, measured in a few seconds at most. I was wondering about that. But I think they're going to find the white slabs and material in the trench is indeed water ice. That area has observations from the Odyssey orbiter showing from 30% to 60% water ice in the first meter or so. Even in the first few inches. The poles are all covered with Co2 ice, but on the fringes surrounding the poles is a region of water ice. Which is where they landed. So I think that's a slab of water ice with naturally bored holes. The data supports a ...currently active...water cycle on Mars in these areas. Which is what life needs. I believe the best conditions for life would be where water transitions from water-ice-vapor and back again. Not so much in any one of those realms, but where the transition takes place. This landing site is looking better every day. I'm getting psyched up! Water Mass Map from Neutron Spectrometer http://www.nasa.gov/mission_pages/ph...-20080513.html ASU scientist finds Martian ice is patchy and variable "The fact that ice is present near the depth of stability in the current Martian climate shows that the ground ice is responding to climate cycles," he says." "This implies that water ice in the ground can swap places with water vapor in the atmosphere as the climate changes, he says, adding: "The THEMIS measurements support an active water cycle on Mars, such as other research has predicted." http://asunews.asu.edu/stories/20070...03_marsice.htm It really didn't help that it took so long to get the soil sample into the test chamber - any CO2 or water ice in it might have sublimated into the atmosphere between the time it was scooped up and the time it finally got into the test chamber days later. Ideally, the soil sample goes into the test chamber within a few minutes after the arm scoops it up, to preserve any volatile ices in it. I still have grave doubts about it finding water ice, but would happily admit to being wrong about this if firm proof of water ice is found, because of the profound implications of such a finding. Here's a really nice paper on the presumed history of water ice at the Phoenix Mars landing site. Aptly named.... THE HISTORY OF ICE AT THE PHOENIX MARS LANDING SITE Lunar and Planetary Science XXXIX (2008) 1479 What's interesting is this statement below is about the age of the ice. "It is not reliably known when the last massive ice sheet formed [14, 5, 6] or how humidity varies with time. In total, four climate scenarios are simulated: Precipitation 5640 ka ago and 632 ka ago (the most recent obliquity maximum with ~35 d) with constant humidity and time �varying humidity. Figure 3 shows preliminary model results for the vertical ice profile, if the last ice sheet formed 632 ka ago. The massive ice sheet is much closer to the surface than it would be had it last formed millions of years ago." http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1479.pdf Not so old as we've been led to believe all this time. Nearer the surface means younger. And if that is ice they've photographed so close to the surface....it must be very young. Since the soil is thought to build from dust accumulation from the air. Since other data indicates Mars is just now exiting an ice age and warming, it may be the last warm period with liquid water near the surface could have have been that figure of 630,000 years ago. Not billions, maybe not even millions of years ago. And another thing, it's pretty clear from the much greater lag deposit at the Phoenix site that it's a much older surface than at Meridiani, which is pure soil with hardly a rock to be found. That implies water ice could have been at Meridiani even more recently. I'm going with ...all the white stuff... is water ice. Pat Under what conditions does carbonated salt water stay frozen? Also, frozen hydrogen peroxide is not entirely impossible. kk |
#12
|
|||
|
|||
...First Microscopic Images....It's gotta be Water-Ice!
jonathan wrote:
"Pat Flannery" wrote in message lephone... George wrote: NASA said today that the hole is directly beneath a thruster, and so is probably the result of a thruster firing when the craft landed. They also said that that might indicate that the slab is ice. Or dry ice... I took a Bernz-O-Matic torch to water ice with very poor results indeed, and the total time of the landing engine's impinging on the Martian surface would be be very low, measured in a few seconds at most. I was wondering about that. But I think they're going to find the white slabs and material in the trench is indeed water ice. That area has observations from the Odyssey orbiter showing from 30% to 60% water ice in the first meter or so. Even in the first few inches. The poles are all covered with Co2 ice, but on the fringes surrounding the poles is a region of water ice. Which is where they landed. So I think that's a slab of water ice with naturally bored holes. The data supports a ...currently active...water cycle on Mars in these areas. Which is what life needs. I believe the best conditions for life would be where water transitions from water-ice-vapor and back again. Not so much in any one of those realms, but where the transition takes place. This landing site is looking better every day. I'm getting psyched up! Water Mass Map from Neutron Spectrometer http://www.nasa.gov/mission_pages/ph...-20080513.html ASU scientist finds Martian ice is patchy and variable "The fact that ice is present near the depth of stability in the current Martian climate shows that the ground ice is responding to climate cycles," he says." "This implies that water ice in the ground can swap places with water vapor in the atmosphere as the climate changes, he says, adding: "The THEMIS measurements support an active water cycle on Mars, such as other research has predicted." http://asunews.asu.edu/stories/20070...03_marsice.htm It really didn't help that it took so long to get the soil sample into the test chamber - any CO2 or water ice in it might have sublimated into the atmosphere between the time it was scooped up and the time it finally got into the test chamber days later. Ideally, the soil sample goes into the test chamber within a few minutes after the arm scoops it up, to preserve any volatile ices in it. I still have grave doubts about it finding water ice, but would happily admit to being wrong about this if firm proof of water ice is found, because of the profound implications of such a finding. Here's a really nice paper on the presumed history of water ice at the Phoenix Mars landing site. Aptly named.... THE HISTORY OF ICE AT THE PHOENIX MARS LANDING SITE Lunar and Planetary Science XXXIX (2008) 1479 What's interesting is this statement below is about the age of the ice. "It is not reliably known when the last massive ice sheet formed [14, 5, 6] or how humidity varies with time. In total, four climate scenarios are simulated: Precipitation 5640 ka ago and 632 ka ago (the most recent obliquity maximum with ~35 d) with constant humidity and time �varying humidity. Figure 3 shows preliminary model results for the vertical ice profile, if the last ice sheet formed 632 ka ago. The massive ice sheet is much closer to the surface than it would be had it last formed millions of years ago." http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1479.pdf Not so old as we've been led to believe all this time. Nearer the surface means younger. And if that is ice they've photographed so close to the surface....it must be very young. Since the soil is thought to build from dust accumulation from the air. Since other data indicates Mars is just now exiting an ice age and warming, it may be the last warm period with liquid water near the surface could have have been that figure of 630,000 years ago. Not billions, maybe not even millions of years ago. And another thing, it's pretty clear from the much greater lag deposit at the Phoenix site that it's a much older surface than at Meridiani, which is pure soil with hardly a rock to be found. That implies water ice could have been at Meridiani even more recently. I'm going with ...all the white stuff... is water ice. Pat Under what conditions does carbonated salt water stay frozen? Also, frozen hydrogen peroxide is not entirely impossible. kk |
#13
|
|||
|
|||
...First Microscopic Images....It's gotta be Water-Ice!
On Sat, 21 Jun 2008 21:20:20 -0700 (PDT), windbag
wrote: Under what conditions does carbonated salt water stay frozen? ....Two points: 1) "jonathan" is a known troll. Most of us - at least, those of us with one iota of sense - have killfiled him. Please do the same for the sake of your sanity and ours. 2) If you *must* reply to him, trim the quotes. The less you quote, the less he wastes bandwidth again. Thanks! OM -- ]=====================================[ ] OMBlog - http://www.io.com/~o_m/omworld [ ] Let's face it: Sometimes you *need* [ ] an obnoxious opinion in your day! [ ]=====================================[ |
#14
|
|||
|
|||
...First Microscopic Images of Soil from another World...and
On Jun 18, 5:15*am, "V for Vendicar"
m wrote: * The atmospheric pressure 2cm under a pile of sand is not practically different than the atmospheric pressure at the surface. * Salt. Say what one will against them, the European and UK papers have the best headline writers bar none: http://www.theregister.co.uk/2008/06...wet_chemistry/ Barb -------- "One ought, every day at least, to hear a little song, read a good poem, see a fine picture, and if it were possible, to speak a few reasonable words." -- Johann Wolfgang von Goethe, liked geology, had mineral named after him. |
#15
|
|||
|
|||
...First Microscopic Images of Soil from another World...and
On Fri, 27 Jun 2008 20:06:13 -0700 (PDT), Belba Grubb
wrote: Say what one will against them, the European and UK papers have the best headline writers bar none: http://www.theregister.co.uk/2008/06...wet_chemistry/ ....Wouldn't that be "asparagii"? OM -- ]=====================================[ ] OMBlog - http://www.io.com/~o_m/omworld [ ] Let's face it: Sometimes you *need* [ ] an obnoxious opinion in your day! [ ]=====================================[ |
#16
|
|||
|
|||
...First Microscopic Images....It's gotta be Water-Ice!
On Jun 21, 9:22 pm, windbag wrote:
jonathan wrote: "Pat Flannery" wrote in message lephone... George wrote: NASA said today that the hole is directly beneath a thruster, and so is probably the result of a thruster firing when the craft landed. They also said that that might indicate that the slab is ice. Or dry ice... I took a Bernz-O-Matic torch to water ice with very poor results indeed, and the total time of the landing engine's impinging on the Martian surface would be be very low, measured in a few seconds at most. I was wondering about that. But I think they're going to find the white slabs and material in the trench is indeed water ice. That area has observations from the Odyssey orbiter showing from 30% to 60% water ice in the first meter or so. Even in the first few inches. The poles are all covered with Co2 ice, but on the fringes surrounding the poles is a region of water ice. Which is where they landed. So I think that's a slab of water ice with naturally bored holes. The data supports a ...currently active...water cycle on Mars in these areas. Which is what life needs. I believe the best conditions for life would be where water transitions from water-ice-vapor and back again. Not so much in any one of those realms, but where the transition takes place. This landing site is looking better every day. I'm getting psyched up! Water Mass Map from Neutron Spectrometer http://www.nasa.gov/mission_pages/ph...-20080513.html ASU scientist finds Martian ice is patchy and variable "The fact that ice is present near the depth of stability in the current Martian climate shows that the ground ice is responding to climate cycles," he says." "This implies that water ice in the ground can swap places with water vapor in the atmosphere as the climate changes, he says, adding: "The THEMIS measurements support an active water cycle on Mars, such as other research has predicted." http://asunews.asu.edu/stories/20070...03_marsice.htm It really didn't help that it took so long to get the soil sample into the test chamber - any CO2 or water ice in it might have sublimated into the atmosphere between the time it was scooped up and the time it finally got into the test chamber days later. Ideally, the soil sample goes into the test chamber within a few minutes after the arm scoops it up, to preserve any volatile ices in it. I still have grave doubts about it finding water ice, but would happily admit to being wrong about this if firm proof of water ice is found, because of the profound implications of such a finding. Here's a really nice paper on the presumed history of water ice at the Phoenix Mars landing site. Aptly named.... THE HISTORY OF ICE AT THE PHOENIX MARS LANDING SITE Lunar and Planetary Science XXXIX (2008) 1479 What's interesting is this statement below is about the age of the ice. "It is not reliably known when the last massive ice sheet formed [14, 5, 6] or how humidity varies with time. In total, four climate scenarios are simulated: Precipitation 5640 ka ago and 632 ka ago (the most recent obliquity maximum with ~35 d) with constant humidity and time �varying humidity. Figure 3 shows preliminary model results for the vertical ice profile, if the last ice sheet formed 632 ka ago. The massive ice sheet is much closer to the surface than it would be had it last formed millions of years ago." http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1479.pdf Not so old as we've been led to believe all this time. Nearer the surface means younger. And if that is ice they've photographed so close to the surface....it must be very young. Since the soil is thought to build from dust accumulation from the air. Since other data indicates Mars is just now exiting an ice age and warming, it may be the last warm period with liquid water near the surface could have have been that figure of 630,000 years ago. Not billions, maybe not even millions of years ago. And another thing, it's pretty clear from the much greater lag deposit at the Phoenix site that it's a much older surface than at Meridiani, which is pure soil with hardly a rock to be found. That implies water ice could have been at Meridiani even more recently. I'm going with ...all the white stuff... is water ice. Pat Under what conditions does carbonated salt water stay frozen? Also, frozen hydrogen peroxide is not entirely impossible. kk Why no mass spectrometer readings? - Brad Guth Brad_Guth Brad.Guth BradGuth |
#17
|
|||
|
|||
...First Microscopic Images....It's gotta be Water-Ice!
"BradGuth" wrote Why no mass spectrometer readings? Give them time. Water ice frost has been photographed on the surface of mars by various mars landers. So the finding of water ice frost is nothing new. It does support the idea that there is a large quantity of water ice below the surface however - which is what the radar indicated. |
#18
|
|||
|
|||
...First Microscopic Images....It's gotta be Water-Ice!
BradGuth wrote:
On Jun 21, 9:22 pm, windbag wrote: jonathan wrote: "Pat Flannery" wrote in message lephone... George wrote: NASA said today that the hole is directly beneath a thruster, and so is probably the result of a thruster firing when the craft landed. They also said that that might indicate that the slab is ice. Or dry ice... I took a Bernz-O-Matic torch to water ice with very poor results indeed, and the total time of the landing engine's impinging on the Martian surface would be be very low, measured in a few seconds at most. I was wondering about that. But I think they're going to find the white slabs and material in the trench is indeed water ice. That area has observations from the Odyssey orbiter showing from 30% to 60% water ice in the first meter or so. Even in the first few inches. The poles are all covered with Co2 ice, but on the fringes surrounding the poles is a region of water ice. Which is where they landed. So I think that's a slab of water ice with naturally bored holes. The data supports a ...currently active...water cycle on Mars in these areas. Which is what life needs. I believe the best conditions for life would be where water transitions from water-ice-vapor and back again. Not so much in any one of those realms, but where the transition takes place. This landing site is looking better every day. I'm getting psyched up! Water Mass Map from Neutron Spectrometer http://www.nasa.gov/mission_pages/ph...-20080513.html ASU scientist finds Martian ice is patchy and variable "The fact that ice is present near the depth of stability in the current Martian climate shows that the ground ice is responding to climate cycles," he says." "This implies that water ice in the ground can swap places with water vapor in the atmosphere as the climate changes, he says, adding: "The THEMIS measurements support an active water cycle on Mars, such as other research has predicted." http://asunews.asu.edu/stories/20070...03_marsice.htm It really didn't help that it took so long to get the soil sample into the test chamber - any CO2 or water ice in it might have sublimated into the atmosphere between the time it was scooped up and the time it finally got into the test chamber days later. Ideally, the soil sample goes into the test chamber within a few minutes after the arm scoops it up, to preserve any volatile ices in it. I still have grave doubts about it finding water ice, but would happily admit to being wrong about this if firm proof of water ice is found, because of the profound implications of such a finding. Here's a really nice paper on the presumed history of water ice at the Phoenix Mars landing site. Aptly named.... THE HISTORY OF ICE AT THE PHOENIX MARS LANDING SITE Lunar and Planetary Science XXXIX (2008) 1479 What's interesting is this statement below is about the age of the ice. "It is not reliably known when the last massive ice sheet formed [14, 5, 6] or how humidity varies with time. In total, four climate scenarios are simulated: Precipitation 5640 ka ago and 632 ka ago (the most recent obliquity maximum with ~35 d) with constant humidity and time �varying humidity. Figure 3 shows preliminary model results for the vertical ice profile, if the last ice sheet formed 632 ka ago. The massive ice sheet is much closer to the surface than it would be had it last formed millions of years ago." http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1479.pdf Not so old as we've been led to believe all this time. Nearer the surface means younger. And if that is ice they've photographed so close to the surface....it must be very young. Since the soil is thought to build from dust accumulation from the air. Since other data indicates Mars is just now exiting an ice age and warming, it may be the last warm period with liquid water near the surface could have have been that figure of 630,000 years ago. Not billions, maybe not even millions of years ago. And another thing, it's pretty clear from the much greater lag deposit at the Phoenix site that it's a much older surface than at Meridiani, which is pure soil with hardly a rock to be found. That implies water ice could have been at Meridiani even more recently. I'm going with ...all the white stuff... is water ice. Pat Under what conditions does carbonated salt water stay frozen? Also, frozen hydrogen peroxide is not entirely impossible. kk Why no mass spectrometer readings? - Brad Guth Brad_Guth Brad.Guth BradGuth because most americans are as stupid as bradguth. he would NEVER read the data if they published it. he would make up his own, and ask for some one else to write super computer graphics to prove it. josephus -- I go sailing in the summer and look at stars in the winter, "Everybody is ignorant but on different subjects" --Will Rogers Its not what you know that gets you in trouble its what you know that aint so. --josh billings. |
#19
|
|||
|
|||
...First Microscopic Images of Soil from another World...and
Flat ice... Under a rocket thruster? It would have sublimed away a long time ago. "Pat Flannery" wrote We talking dry ice or water ice here? Temperature, heating by solar illumination, atmospheric pressure, and the insulating properties of the soil over the ice all change its ability to sublimate into the atmosphere. Personally, I think there's nothing but CO2 "dry ice" there. But, who knows? Looks like it's water ice frost. Quite frankly I'm surprised at it's form just under the surface of the sand. Water ice frost has been photographed by landers on the surface of mars, so it's not unprecedented. But clearly there is a large reservior of water just under the surface in that region, just as the orbital obsrevations suggested. Congratulations to the scientists who built the orbiter. "Pat Flannery" wrote What interests me is the NASA "liquid water" ejections on the side of the crater photos from around a year back. The consensus opinion now, is that they were not caused by water but by the collapse of a column of sand. "Pat Flannery" wrote At Mars surface temperatures, the triple point of CO2 needs only pressure to allow CO2 to exist in a liquid form.. and those "water ejections" came out of the side of the crater from around a hundred feet or more depth - never on the surface. I'm suspicious myself. Look at this image. http://www.ufoarea.com/pictures/mars_comp_trees_veg.jpg Also I would love to see close up photo's of these structures. Ignore the web pages, they are just used as an image repository for my purposes. http://historyandmystery.homestead.c...Mars_trees.jpg http://paranormal.about.com/library/..._trees1_lg.jpg http://images.google.ca/imgres?imgur...3Doff%26sa%3DN |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
New VLA Images Unlocking Galactic Mysteries (Forwarded) | Andrew Yee | Astronomy Misc | 0 | January 21st 08 05:02 PM |
New VLA Images Unlocking Galactic Mysteries (Forwarded) | Andrew Yee | Astronomy Misc | 0 | January 20th 08 06:33 PM |
New VLA Images Unlocking Galactic Mysteries (Forwarded) | Andrew Yee[_1_] | News | 0 | January 11th 08 02:48 AM |
All the spirit microscopic images from the trench are blur !!! Who believes that ? | Eric Pouhier | Amateur Astronomy | 10 | February 27th 04 12:22 AM |
Nikon M-35 microscopic camera for astrophotography? | JONAS CARLSSON | UK Astronomy | 0 | July 7th 03 08:00 PM |