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Mars Polar Caps
At the Martian North Pole there is water in the form of ice. However at
the South Pole frozen carbon dioxide (dry ice) Hmmmm Seems a little strange(yes?) Was the North Pole hit by a ice comet? Did the water come up from Mars interior? Here on earth hydrogen is found underground could be the same way on Mars. Is there a volcano near the North Pole? Well all of this comes from rather weak evidence. Don't know if those probes will answer hard questions? I know we will not be walking on the moon in the next 50 years,and that is only three days away. mars is six months. We need a robot to land on Mars,and pick up a 10lb rock and blast off,and return to earth. That is not very hard to do. Bert |
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Mars Polar Caps
Bert posted:
At the Martian North Pole there is water in the form of ice. However at the South Pole frozen carbon dioxide (dry ice) Hmmmm Seems a little strange(yes?) No, it is not strange. There is water ice at both poles, but there is a lot more on the surface at the northern pole probably due in part to the way the tilt of the planet's axis interacts with the notable orbital eccentricity of the planet's orbit. Also, the dust storms are more intense in the southern hemisphere, which tends to burry surface ice under a layer of dust. Both polar caps are overlaid with large but temporary caps made frozen Carbon Dioxide which expands in area in local winter and retreats in local summer. Is there a volcano near the North Pole? No, none are very near the north pole. The closest one is probably Kison Tholus near the southern edge of the northern dune field which surrounds the north polar cap. We need a robot to land on Mars, and pick up a 10lb rock and blast off,and return to earth. That is in the works for a future mission. That is not very hard to do. If it is not very hard to do, lets see *you* try and do it Bert!. It is *very* hard. -- David W. Knisely Prairie Astronomy Club: http://www.prairieastronomyclub.org Hyde Memorial Observatory: http://www.hydeobservatory.info/ ********************************************** * Attend the 10th Annual NEBRASKA STAR PARTY * * July 27-Aug. 1st, 2003, Merritt Reservoir * * http://www.NebraskaStarParty.org * ********************************************** |
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Mars Polar Caps
Ron Miller wrote:
"G=EMC^2 Glazier" wrote in message ... At the Martian North Pole there is water in the form of ice. However at the South Pole frozen carbon dioxide (dry ice) Hmmmm Seems a little strange(yes?) No. The reason is that the poles are not equally cold. In the northern summer, temperatures become warm enough to burn off most of the CO2 frost, exposing the water ice cap beneath (in fact, some of the water ice begins to sublime too). During summer in the southern hemisphere, however, it never becomes warm enough to burn off the CO2 cap. There is water ice at both poles, however. On average the north polar regions seem to be several thousand metres lower than the south, as well; the higher atmospheric pressure there must have some effect on the relative evaporation/sublimation rates of water and carbon dioxide, in addition to the 'climatic' differences between the hemispheres. --Odysseus |
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Mars Polar Caps
David this is how I would get a rock or a core sample from Mars Surface.
The Mars lander would have just one moving part it would be a 6 foot hollow pipe that is driven into the ground of Mars by the force of gravity. The end of the pipe slides shut(its only moving part),and it is now in the position to blast off,and come back to earth with its core sample. I simplified it so a NASA engineer might be able to understand the engineering. Or you Bert. |
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Mars Polar Caps
"Odysseus" wrote in message ... BenignVanilla wrote: BVNASA would design a base probe that would be of the size and weight that we could launch multiples on a single rocket or shuttle mission. I'd like to see 5 20lb probes, instead of 1 100lb probe. If we could simplify and reproduce many probes, then maybe we could perform more experiments. The big problem is providing them with enough fuel to be able to escape Mars so as to return with the sample. Of course it's much easier getting off Mars than Earth, but look at the size of the boosters that are needed to launch even the smallest terrestrial satellites! Yeah, BVNASA still has a few quirks to work out. *laugh* BV. |
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Mars Polar Caps
How much does Mars polar caps disappear in spring and summer? Do they
move,or just evaporate? If you took a picture of the ice caps from summer to summer how much change would there be? Comparing time frames can give us lots of information. Mars equator must be its hottest area. What is the difference in temp of the ice caps to the equator? Is the South Pole colder than the North Pole? Does sand and dust cover the pole areas? Bert |
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Mars Polar Caps
Bert posted:
How much does Mars polar caps disappear in spring and summer? Most of the southern polar cap (the seasonal cap) vanishes during summer with the exception of a small permanent cap (probably mostly water-ice) just off-set from the south pole. The northern cap also shows variations in its size, but it has a much larger permanent cap which never goes away even in the northern summer. If you took a picture of the ice caps from summer to summer how much change would there be? There would be minor changes in the outlines of the permanent caps, but the overall extent remains the same. What is the difference in temp of the ice caps to the equator? It depends on the season and on which cap you mean. In the northern cap, the temperature can be colder than 150 Kelvin in the fall and winter months, but during summer can reach from 205 Kelvin to perhaps 235 Kelvin in some of the darker areas. The Southern cap can get up to 160 Kelvin during the summer, so its summer tends to be colder than the Northern cap's summer maximum tempertures. The equatorial regions can reach the freezing point of water (273 Kelvin) or perhaps a bit higher in some regions, but it depends on the area, and most of the time, the temperatures are well below freezing. Does sand and dust cover the pole areas? There is dust in the polar regions and the northern (permanent) cap is surrounded by a large dune field. -- David W. Knisely Prairie Astronomy Club: http://www.prairieastronomyclub.org Hyde Memorial Observatory: http://www.hydeobservatory.info/ ********************************************** * Attend the 10th Annual NEBRASKA STAR PARTY * * July 27-Aug. 1st, 2003, Merritt Reservoir * * http://www.NebraskaStarParty.org * ********************************************** |
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