David Levy Posted October 8, 2012 Posted October 8, 2012 (edited) Tidal Habitable Zone http://www.astrobio....-habitable-zone "The research was funded by NASA". "Astronomers searching for Earth like planets often focus on the 'habitable zone' around stars – where the heat from the star is at the perfect level for liquid water to exist. New calculations indicate that planets close to their parent stars could experience tidal forces that limit the habitable zone and change the criteria habitable planets". With regards to Mars. As is out of the Habitable Zone, how come that it had a liquid water??? In this articale it is stated: "The new calculations have implications for planets previously considered too small for habitability. An example is Mars, which used to experience tectonics but that activity ceased as heat from the planet's decaying inner core dissipated". " If Mars were to move closer to the sun, the sun's tidal tugs could possibly restart the tectonics, releasing gases from the core to provide more atmosphere. If Mars harbors liquid water, at that point it could be habitable for life as we know it". So, does it indicate that Mars was closer to the sun in the past??? Therefore, Mars is moving outwards from the Sun!!! If this research was funded by NASA, why they do not verify it??? Edited October 8, 2012 by David Levy 2
ACG52 Posted October 8, 2012 Posted October 8, 2012 So, does it indicate that Mars was closer to the sun in the past??? No. It indicates that Mars used to experience tectonic activity, but now it doesn't. In fact, it more than indicates it, it says so.
Moontanman Posted October 9, 2012 Posted October 9, 2012 The greenhouse effect should be mentioned here as well. The habitable zone depends on more than just distance to the sun, atmosphere plays a big part, if the Earth had less atmosphere it would be frozen over, if Venus had less it wouldn't be as hot. Exchange Mars and Venus in orbit and conditions on both planets would change but Venus wouldn't necessarily be frozen over and Mars wouldn't be as hot as Venus is now...
michel123456 Posted October 9, 2012 Posted October 9, 2012 I wonder whether the 'habitable zone" on the diagram is the result of calculations or the result of pure observation and extrapolation.
Moontanman Posted October 9, 2012 Posted October 9, 2012 I wonder whether the 'habitable zone" on the diagram is the result of calculations or the result of pure observation and extrapolation. There are other schools of thought on the idea of the habitable zone, some are based on stellar luminosity and ignore all other factors, others are more optimistic... http://en.wikipedia.org/wiki/Habitable_zone Beyond the outer edge of the habitable zone, a planet will be too cold to sustain liquid water on its surface. Any water present will freeze. A planet closer to its star than the inner edge of the habitable zone will be too hot. Any water present will boil away or be lost into space entirely. Liquid water is considered important because carbon compounds dissolved in water form the basis of all earthly life, so watery planets are good candidates to support similar carbon-based biochemistries.Theoretical determinations of the habitable zone are based on empirical observation of the habitability of the Earth and its orbit within Solar System. Various complications must be taken into account, such as the greenhouse effect and changing albedo due to clouds. [edit]Solar System estimates Estimates for the habitable zone within the Solar System range from 0.725 to 3.0 astronomical units based on various scientific models. Estimation of the Solar System's habitable zone is made difficult due to a number of factors. Although the aphelion of planet Venus and the complete orbits of the Moon, the planet Mars and dwarf planet Ceres are within the habitable zone, the varying atmospheric pressures of these planets, rather than the habitable zone, determines their potential for surface water. In the case of Venus, the atmospheric pressure is far too high, and a runaway greenhouse effect raises the surface temperature massively, and in the case of Mars, the atmospheric pressure is too low, although Seasonal flows on warm Martian slopes have not yet been ruled out. For the Moon and Ceres atmosphere is virtually nonexistent, and therefore, surface liquid water cannot exist on these worlds. Most estimates therefore are inferred on the effect that repositioned orbit would have on the habitability of Earth or Venus, therefore the habitable zone is based on calculations based on similar sizes and atmospheric pressures.
Enthalpy Posted October 9, 2012 Posted October 9, 2012 Still in the present, temperature on Mars does exceed 0°C from time to time, so liquid water in the past needs a thicker atmosphere, not necessarily warmer temperatures. Only much water flowing frequently needs a warmer planet.
Astrology Posted October 9, 2012 Posted October 9, 2012 Tidal Habitable Zone http://www.astrobio....-habitable-zone "The research was funded by NASA". "Astronomers searching for Earth like planets often focus on the 'habitable zone' around stars – where the heat from the star is at the perfect level for liquid water to exist. New calculations indicate that planets close to their parent stars could experience tidal forces that limit the habitable zone and change the criteria habitable planets". With regards to Mars. As is out of the Habitable Zone, how come that it had a liquid water??? In this articale it is stated: "The new calculations have implications for planets previously considered too small for habitability. An example is Mars, which used to experience tectonics but that activity ceased as heat from the planet's decaying inner core dissipated". " If Mars were to move closer to the sun, the sun's tidal tugs could possibly restart the tectonics, releasing gases from the core to provide more atmosphere. If Mars harbors liquid water, at that point it could be habitable for life as we know it". So, does it indicate that Mars was closer to the sun in the past??? Therefore, Mars is moving outwards from the Sun!!! If this research was funded by NASA, why they do not verify it??? Mars do not have a atmosphere so it is not possible for mars to have any water
Moontanman Posted October 9, 2012 Posted October 9, 2012 Mars do not have a atmosphere so it is not possible for mars to have any water Yes Mars does have an atmosphere, care to try again? http://en.wikipedia.org/wiki/Atmosphere_of_Mars The atmosphere of Mars is relatively thin and is composed mostly of carbon dioxide (95.32%). There has been interest in studying its composition since the detection of trace amounts of methane,[2][3] which may indicate the presence of life on Mars, but may also be produced by a geochemical process, volcanic or hydrothermal activity.[4]
Astrology Posted October 10, 2012 Posted October 10, 2012 Yes Mars does have an atmosphere, care to try again? http://en.wikipedia....osphere_of_Mars Well it does not even have a OzoneLayer so there is no atmosphere What do you suppose about that
ACG52 Posted October 10, 2012 Posted October 10, 2012 I'd suppose you didn't bother reading the link.
Astrology Posted October 10, 2012 Posted October 10, 2012 I'd suppose you didn't bother reading the link. I suppose that that be erelevant because i know all about that aspect that be about the MarsWaterConcept it was developed to start a atmosphere on mars that would form water and exectra and so anyway it still be being a lie that there is water on mars and lies do not get things done and cause disorders
ACG52 Posted October 10, 2012 Posted October 10, 2012 (edited) Did you get that from watching Total Recall? Edited October 10, 2012 by ACG52 2
Moontanman Posted October 10, 2012 Posted October 10, 2012 Well it does not even have a OzoneLayer so there is no atmosphere What do you suppose about that Exactly how does not having an ozone layer mean there is no atmosphere? Earth would be the only known planet with an ozone layer yet many planets have extensive atmospheres. How does that fit with your assertion that Mars has no atmosphere because it has no ozone layer?
Astrology Posted October 10, 2012 Posted October 10, 2012 Exactly how does not having an ozone layer mean there is no atmosphere? Earth would be the only known planet with an ozone layer yet many planets have extensive atmospheres. How does that fit with your assertion that Mars has no atmosphere because it has no ozone layer? Because the atmosphere contains the clouds that be a very good example and so the clouds be a vapor and it transforms into water a liquid and be called rain though So that be the only reason for the presence of water
Moontanman Posted October 10, 2012 Posted October 10, 2012 (edited) Because the atmosphere contains the clouds that be a very good example and so the clouds be a vapor and it transforms into water a liquid and be called rain though So that be the only reason for the presence of water In no way does this answer my question or your assertion about ozone or the atmosphere of Mars... Edited October 10, 2012 by Moontanman
Astrology Posted October 10, 2012 Posted October 10, 2012 In no way does this answer my question or your assertion about ozone or the atmosphere of Mars... I am SigningOut like there is NoTomorrow Tomorrow i shall continue though Later Thanks
Greg H. Posted October 10, 2012 Posted October 10, 2012 Tomorrow i shall continue though And you'll still be wrong. Mars does have an atmosphere, albeit a thin one. According to NASA: The maximum wind speeds recorded by the Viking Landers in the 1970's were about 30 meters per second (60 miles an hour) with an average of 10 m/s (20 mph). Additionally, NASA landers have measured the average atmospheric pressure on Mars to be about 7.5 millibars. How do you measure wind speed and barometric pressure with no atmosphere again?
derek w Posted October 10, 2012 Posted October 10, 2012 (edited) When the solar system first formed Mars would have had a higher internal heat,a molten planet,over time it has cooled down to its present temperature,at some point during this period of cooling it would have been at the right temperature to have a surface crust and liquid water on it's surface,the liquid water coming from meteor/asteroid collisions. Edited October 10, 2012 by derek w
David Levy Posted October 10, 2012 Author Posted October 10, 2012 (edited) To ACG52 No. It indicates that Mars used to experience tectonic activity, but now it doesn't. In fact, it more than indicates it, it says so It is stated very clear: "If Mars were to move closer to the sun, the sun's tidal tugs could possibly restart the tectonics, releasing gases from the core to provide more atmosphere". So, if Mars would move closer to the sun, it could have an atmosphere. Therefore, in order to gain an atmosphere, Mars must be closer to the Sun. In the past Mars had an atmosphere. Hence, it the past Mars was closer to the sun. Today, Mars is further from the Sun, without an atmosphere. Therefore, Mars is moving outwards from the Sun. Why is it so difficult for you? Edited October 10, 2012 by David Levy
ACG52 Posted October 10, 2012 Posted October 10, 2012 To ACG52 No. It indicates that Mars used to experience tectonic activity, but now it doesn't. In fact, it more than indicates it, it says so It is stated very clear: "If Mars were to move closer to the sun, the sun's tidal tugs could possibly restart the tectonics, releasing gases from the core to provide more atmosphere". So, if Mars would move closer to the sun, it could have an atmosphere. Therefore, in order to gain an atmosphere, Mars must be closer to the Sun. In the past Mars had an atmosphere. Hence, it the past Mars was closer to the sun. Today, Mars is further from the Sun, without an atmosphere. Therefore, Mars is moving outwards from the Sun. Why is it so difficult for you? You have an amazing ability to completely misread statements in order to conform to your nonsense. The statement was tectonic activity supplied the heat which allowed an atmosphere to exist on Mars. The statement was also made that if Mars could move closer to the sun, the tectonic activity might restart. There was no implication that Mars was closer to the sun in the past, just that it was tectonically active. Your reasoning seems to be along the lines of A = B, and B = C, therefore A = D.
derek w Posted October 10, 2012 Posted October 10, 2012 I don't see anywhere in the article that it say's Mars was closer to the sun,it only makes a hypothetical point of what Mars would be like if it were closer to the sun.
David Levy Posted October 10, 2012 Author Posted October 10, 2012 (edited) To AGC52 You have unbelievable need to show how narrow minded you are. You can't look behind your nose. Just to remind your narrow minded; Last century, the hypothesis was that the moon is also in the same distance from the earth. Thanks to NASA we all know that it moves outwards. In the same token, so far the hypothesis was that Mars is always in the same distance from the Sun. It does not move inwards or outwards – even after billions of years…. Never the less, no one really measured the distance in time and try to get concrete results. In this article there is a base for conclution that Mars is moving outwards. It's time to ask NASA to verify this critical issue. Actually, you can't reject my conclusion as currently there is no solid evidence that Mars is not moving (inwards or outwards). But, you are more than welcome to continue with your rejections. It emphasis your Thoughtlessness. Edited October 10, 2012 by David Levy
Moontanman Posted October 10, 2012 Posted October 10, 2012 Mars lost most of it's atmosphere due to it's lack of a magnetic field, when the planet cooled, if it ever had a magnetic field, the field shut down and the solar wind tore away most of it's atmosphere. This process has been confirmed by NASA space probes. There is no need to suppose that Mars is moving away from or closer to the sun to explain it's current conditions...
ElasticCollision Posted October 10, 2012 Posted October 10, 2012 Because the atmosphere contains the clouds that be a very good example and so the clouds be a vapor and it transforms into water a liquid and be called rain though So that be the only reason for the presence of water TROLL IN THE DUNGEON!
Astrology Posted October 10, 2012 Posted October 10, 2012 If no ozone so no atmosphere factualy The gases that be being the vapor specificaly be moving around i understand and though the atmosphere be being the oxigen hydrogen clouds be a very good example that be being a vapor and exectra Suppose about the vaporive aspect for some reason i suppose it be being important
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