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What Came First ????
What came first in creating a planet? Was it the solid core,or the gas?
The solid core would have more mass density,and that means stronger force of gravity to capture,and keep a gas from radiating out into space. Or did the gas that had dust in it settle down in the middle of the cloud and create a core to revolve around? Its almost like what came first the chicken or the egg.(chicken being the gas) Jupiter has so dense an atmosphere it begs this question "What has the greater amount of particles its atmosphere or its core.?" Bert PS Does its core revolve at the exact same rate as its atmosphere? If they don't I could create a theory as to Jupiters strong global magnetic field |
#2
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It really dont matter and unknown. Good example of similar process is in
rings on other planets. Things can explode and become ring and eventually get back together and be moon. "G=EMC^2 Glazier" wrote in message ... What came first in creating a planet? Was it the solid core,or the gas? The solid core would have more mass density,and that means stronger force of gravity to capture,and keep a gas from radiating out into space. Or did the gas that had dust in it settle down in the middle of the cloud and create a core to revolve around? Its almost like what came first the chicken or the egg.(chicken being the gas) Jupiter has so dense an atmosphere it begs this question "What has the greater amount of particles its atmosphere or its core.?" Bert PS Does its core revolve at the exact same rate as its atmosphere? If they don't I could create a theory as to Jupiters strong global magnetic field |
#3
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I believe the prevailing theory is that the whole planet coalesced out of the
solar gas cloud, and as the planet's mass increased, compressional heating started, which caused the constituent components to melt, with the heavier elements settling towards the center of the planet. There was also heat created from the impact of infalling material. Then a mars sized body came along and added a lot more heat and a bunch more material. "G=EMC^2 Glazier" wrote in message ... What came first in creating a planet? Was it the solid core,or the gas? The solid core would have more mass density,and that means stronger force of gravity to capture,and keep a gas from radiating out into space. Or did the gas that had dust in it settle down in the middle of the cloud and create a core to revolve around? Its almost like what came first the chicken or the egg.(chicken being the gas) Jupiter has so dense an atmosphere it begs this question "What has the greater amount of particles its atmosphere or its core.?" Bert PS Does its core revolve at the exact same rate as its atmosphere? If they don't I could create a theory as to Jupiters strong global magnetic field |
#4
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What came first is God, but to view it your way, I would say it was the gas.
Charles Nashville, TN USA "G=EMC^2 Glazier" wrote in message ... What came first in creating a planet? Was it the solid core,or the gas? The solid core would have more mass density,and that means stronger force of gravity to capture,and keep a gas from radiating out into space. Or did the gas that had dust in it settle down in the middle of the cloud and create a core to revolve around? Its almost like what came first the chicken or the egg.(chicken being the gas) Jupiter has so dense an atmosphere it begs this question "What has the greater amount of particles its atmosphere or its core.?" Bert PS Does its core revolve at the exact same rate as its atmosphere? If they don't I could create a theory as to Jupiters strong global magnetic field |
#5
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On Sat, 21 Feb 2004 10:58:08 -0500 (EST), (G=EMC^2
Glazier) wrote: What came first in creating a planet? Was it the solid core,or the gas? The solid core would have more mass density,and that means stronger force of gravity to capture,and keep a gas from radiating out into space. Or did the gas that had dust in it settle down in the middle of the cloud and create a core to revolve around? Its almost like what came first the chicken or the egg.(chicken being the gas) Jupiter has so dense an atmosphere it begs this question "What has the greater amount of particles its atmosphere or its core.?" Bert PS Does its core revolve at the exact same rate as its atmosphere? If they don't I could create a theory as to Jupiters strong global magnetic field Hello Bert! You have many questions here, let's take them one at a time. New models of the atmosphere of Jupiter are developped almost every week so keep in mind that what i write here may be wrong tomorrow.... The solid core of Jupiter, if any, is believed to be quite small compared to the size of the planet. It may be composed of crystalized carbon ( a big diamond! ). It is surrounded by a thick layer of liquid "metallic hydrogen", http://en.wikipedia.org/wiki/Metallic_hydrogen perhaps a third of the size of the planet. The rest is various gases. The rotation period of atmospheres ( Jupiter, Earth, Venus, Sun etc... ) varies with latitude: that is what produces the wind "bands" on Jupiter. It does varies also with depth because mainly of friction. Only a solid core does rotate as a whole. Of course, the strong magnetic field of Jupiter is believed to originate in the metallic hydrogen ocean down under. I believe that there must be strong various currents in that ocean, just like in Earth's oceans. A Short History Of The Solar System: It all began more than five billions years ago with the explosion of a supernovae. After all, all the gold, oxygen etc... here on Earth must come from somewhere! That supernovae produced a huge cloud of gases, waiting for eons in space for something to happen... Then it happened: maybe another supernovae sent a shockwave through the cloud strong enough to stir it in motion. That produced some clumps of gases more dense than the surrounding. Because of their gravity, theses clumps attracted dust and gas particles around them, growing bigger and so, accelerating the process. Some of them were bigger and were more efficient at "cleaning" their neighbourhood than others! After a few zillion years, we have a huge gas and dust cloud containing zillions of small rocky particle from the size of a smoke particle to the size of a potatoe. They were revolving around the center of gravity of the cloud but not in a plane like today, they were coming and going from every directions! The chance for collisions was very high and yes, they were colliding happily together, the bigger ones gaining more and more weight faster and faster. That was about 5 billions years ago. One of those big rocks won the jackpot: it's gravitationnal greed made it attact more than 90 % of all matter of the cloud. Because of friction and pressure, heat was produced in it's core, climbing to a point to ignite hydrogen fusion! The Sun began to glow and the solar wind pushed away the remaining light dust particles and gases to the outer edge of he solar system. Meanwhile, the other bodies of the solar system continues to grow, the inner planets taking the heavier elements and the outer ones getting the hydrogen and helium that was pushed away by the solar wind pressure. At the same time, a kind of order was established in the solar system: all thoses bodies that do not revolve in the same way as the big ones must disappear! Well, they did'nt go away, they just crashed onto the big bodies making big holes on the Moon, Mercury etc... In the long run, only "well behaved" bodies were left in the system ( with the exeption of the Oort cloud). That devastating period ended about 4 billions years ago. Now the solar system is somewhat stable, just give some time to Earth to cool down, do a few chemical tricks and here we are, speculating on our origins... Good night! Benoît Morrissette |
#6
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G=EMC^2 Glazier wrote:
What came first in creating a planet? Current solar nebula model starts with observed abundances of H and He gas to dust and volitiles (like water, ammonia, methane). As you shrink such a cloud under gravity, the dust, a site for the accumulation of volitiles as ices on the surface, begins to accumulate into larger and larger pieces, using the ices as a "glue". Static electricity may also play a role. This would, over time, build up larger and larger solid bodies within the ever spinning cloud of gas, which itself is spreading out because of the rotation. The determiner of final outcome is the forming Sun, the heat from which can drive away volitiles and H and He, leaving just the solid stuff to continue accumulating in close to the Sun. At greater distances, the temperature in the solar nebula would have allowed the condensation not only of the solid stuff but the volitiles too. Here, planet building could lead to larger bodies because there would then be more stuff to build with. Eventually, the gravity of these larger bodies would draw in more material, including the gases. Those bodies close to the Sun could not accumulate as much as that farther away because it had been driven away by the Sun. Farther out, this gas material could be included in the planet-building process. A more complete explanation can be found in most elementary, college-level astronomy textbooks. |
#7
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RingPlane wrote:
What came first is God, Please prove that assertion with empirical evidence. -- ____________________________ Pear pimples for hairy fishnuts? |
#8
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"Benoit Morrissette" wrote in message ... Now the solar system is somewhat stable, just give some time to Earth to cool down, do a few chemical tricks and here we are, speculating on our origins... Good night! Benoît Morrissette Yes, those 'chemical tricks' are the really interesting thing......... ; ) |
#9
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Scott Yes I have read many books on how stars are created,and with
today's technology we can penetrate these very opaque dust clouds I read(not my thoughts so don't worry) an interesting discovery that the protostar contracts and the matter accretes onto its equatorial region. Scott this observation enables us to theorize(good thinking) our young sun was also surrounded by a disk of gas and dust. This solar nebula was hypothesized by two guys some two centuries ago. This shows how good thinking can be ahead of technology. By the gas and dust being flat it has more concentrated particles,and that has to be a great physical advantage(sorry my thought) Well have some different thoughts on planet formation,but will post them in "new theory news group" That way I won't upset those that go by the book. Bert |
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