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Thread: Grail Moon Mission

  1. #1 Grail Moon Mission 
    Forum Freshman Schrodingersothercat's Avatar
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    I was surprised by NASA announcing the twin probe Grail Moon Mission. I'm not a full time science nut although I love reading about scienitific studies and breakthroughs. I receive my Science magazine every month and I pop in and out of this forum on a regular basis so I am by no means an expert. But I was unaware that NASA had actually taken this much interest in the double moon theory. To the extent that they have twin probes already up there waiting to link up this weekend to start mapping the gravitational properties of the moon. I guess I'd better start searching for more information on the double moon theory. Any insight on why they are so focused on that theory? And is it that much more viable a theory than the others? OR, are there other reasons for the gravitational mapping and the double moon theory will be a benefactor from the data? Thanks guys. Mark L


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  3. #2  
    Quagma SpeedFreek's Avatar
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    The GRAIL mission was not designed specifically around the double moon theory, it was simply designed to give us a greater knowledge of the interior of the moon, a better gravitational map of the inside. This is done in order that we might get a better understanding of the history of the moon.

    One of the unanswered questions about the history of the moon is how come the far side is so different from the near side. The double moon theory is one possible theory for the history of the moon which accounts for that, and which the results of the GRAIL mission will hopefully either support or discount.

    http://www.nasa.gov/home/hqnews/2007/dec/HQ_07274_Grail_Mission.html

    http://science.nasa.gov/science-news...7sep_twomoons/


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    Forum Freshman Schrodingersothercat's Avatar
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    Speedfreak, as I was writing the post that was in my mind all along, but I thought I'd pop it out there to see if there was more to it than that. They taked in the past about the higher gravity that I thought existed on the near side of the moon, more so than the back side. Theory (or I thought it was) was that as the moon cooled but still soft and malleable the heavier substances migrated towards the higher gravitational pull o f the Earth. Thus heavier denser materials stayed hotter. Then any vulcanism left spewed across the near side causing a smoother surface. But my feeling is that by the time the Moon stopped rotating and the affects of Earths gravity would cause all of that to happen, the Moon had to be cooled beyond that stage. Set up and solid enough not to vulcanize. No fact just my take on it all. Now for a double moon and collision. I would again think that any collision would liquefy the material enough that there would be more even integration of the materials once it all coalesced again??? Mark
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  5. #4  
    Quagma SpeedFreek's Avatar
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    Have a read of the second link I posted, it explains the theory quite well.
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  6. #5  
    Forum Freshman Schrodingersothercat's Avatar
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    Thanks for your replies and the links. Wouldn't it have been great to experience two moons in the sky? But, I wonder where we would be if we had two influences on the Earth? We might not even be here and life on Earth may have been totally different. Any or all of the bodies that hit Earth over time may have been influenced in their trajectories enough to have hit differently or not at all. And others that did not hit Earth and will never be known, could have changed the landscape of this planet in unknown ways. I've always felt that theories are always just that, theory. Until we find real hard repeatable facts, so many differing possibilities exist for all things that I have a feeling once we really get on the moon and start really looking at it thru the human microscope, we may be in for a surprise. I'm 59 and I always wonder what we will discover yet in my life time. I also wonder what will be found after I'm gone. Will this entity called me ever know??? That's a discussion for another section, heh. Time to set back see what they find. Mark L
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