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Scientists Find Asteroids Are Missing...
Thought I'd accidentally post some astronomy content here...
http://www.physorg.com/news154802620.html .... some of us may not have seen this ... David A. Smith |
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Scientists Find Asteroids Are Missing...
dlzc wrote:
Thought I'd accidentally post some astronomy content here... http://www.physorg.com/news154802620.html ... some of us may not have seen this ... Well, I guess we can be glad that they aren't talking about the giant planets migrating all of the way into the inner solar system, but just moving slightly to closer or further orbits depending on the planet. Everything about our solar system seems very moderate. Not only do we have a Goldilocks terrestrial planet, even our gas giants are ideally situated. Other solar systems, you get gas giants migrating right into the inner solar system, but ours not so much. At least as far as we can tell from the leftover remnants that we have left. Yousuf Khan |
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Scientists Find Asteroids Are Missing...
Yousuf Khan wrote in :
dlzc wrote: Thought I'd accidentally post some astronomy content here... http://www.physorg.com/news154802620.html ... some of us may not have seen this ... Well, I guess we can be glad that they aren't talking about the giant planets migrating all of the way into the inner solar system, but just moving slightly to closer or further orbits depending on the planet. Everything about our solar system seems very moderate. Not only do we have a Goldilocks terrestrial planet, even our gas giants are ideally situated. Other solar systems, you get gas giants migrating right into the inner solar system, but ours not so much. At least as far as we can tell from the leftover remnants that we have left. There's more detail here. |
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Scientists Find Asteroids Are Missing...
Yousuf Khan wrote in :
dlzc wrote: Thought I'd accidentally post some astronomy content here... http://www.physorg.com/news154802620.html ... some of us may not have seen this ... Well, I guess we can be glad that they aren't talking about the giant planets migrating all of the way into the inner solar system, but just moving slightly to closer or further orbits depending on the planet. Everything about our solar system seems very moderate. Not only do we have a Goldilocks terrestrial planet, even our gas giants are ideally situated. Other solar systems, you get gas giants migrating right into the inner solar system, but ours not so much. At least as far as we can tell from the leftover remnants that we have left. I mean here. http://www.skyandtelescope.com/commu.../41067517.html |
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Scientists Find Asteroids Are Missing...
Bluuuue Rajah wrote:
Yousuf Khan wrote in : Well, I guess we can be glad that they aren't talking about the giant planets migrating all of the way into the inner solar system, but just moving slightly to closer or further orbits depending on the planet. Everything about our solar system seems very moderate. Not only do we have a Goldilocks terrestrial planet, even our gas giants are ideally situated. Other solar systems, you get gas giants migrating right into the inner solar system, but ours not so much. At least as far as we can tell from the leftover remnants that we have left. There's more detail here. Your link has the following quote: "As Minton and Malhotra point, this "great escape" coincides with a pulse of intense inner-planet bombardment that left the Moon with the vast majority of the craters seen today." http://www.skyandtelescope.com/commu.../41067517.html They said that the majority of asteroids may have been ejected 100 million years after solar system formed. There seems to be a timing problem here. If, as according to the Earth-Mars-sized-object collision theory that led to the formation of the Moon, then the Moon was also just recently formed. Then wouldn't the Moon be basically a molten blob at this point of time, if not simply a debris field? So wouldn't all of these asteroid-hit craters have just gotten smoothed out and incorporated into the molten Moon? If this is the case, then there is a major problem with the Earth-Mars-sized-object theory, and the Moon can't have been formed in that way. Perhaps the Moon actually formed from the same primordial material that the Earth formed from, and at the same time? Thus the Moon would be already relatively as cool as the Earth, by the time the asteroid-belt bombardment happened. I know that people have a problem with this theory about Moon formation because they think the Moon is far too large of a satellite to have formed naturally around the Earth, but perhaps it was one of those freakish coincidences about the Earth that eventually led to life? Yousuf Khan |
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Scientists Find Asteroids Are Missing...
other solar systems?
you know of any star with more than one or two planets? how do you know these stars that wobble form planets have large planets that interfere with small planets. What drugs are you on that makes you see things that wicked fallen angles would show you ? |
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