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If observed Black Hole magnetic fields are generated in part by moving charges within the Black Hole, then curvature of space-time as the means of intermediation of action at a distance for gravity would be undermined as an explanatory conceptual construct. Magnetars are Neutron Stars with extreme magnetic fields. Like Black Holes, their matter becomes so ...


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AdamsMasters, I don't have enough reputation to answer your comment outside of an answer so well, that's because it'll be very low when it gets dark enough to see. It should be visible to the naked eye for maybe literally 5 minutes between mid-twilight and it getting too low to see, but only if the sky isn't very hazy. However, this is from midnorthern ...


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The PyEphem library allows you to create Python scripts that could calculate any conjunction you want (and many other things besides that). http://rhodesmill.org/pyephem/ Here's a script that already does that: http://shallowsky.com/blog/science/astro/predicting-conjunctions.html Here's the result of running that script now: http://pastebin.com/ehjxV66m ...


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A direct cribbing of the wiki's page for the frost line: In astronomy or planetary science, the frost line, also known as the snow line or ice line, is the particular distance in the solar nebula from the central protostar where it is cold enough for volatile compounds such as water, ammonia, methane, carbon dioxide, carbon monoxide to condense into ...


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This is just an amusing addition to the existing answer. It turns out that a metallic hydrogen layer (which lets electrons move freely, and moving electrons means a magnetic field can form) is not enough to account for the size of Jupiter's magnetosphere. It's off by a factor of approximately 2. The rest of it is mostly thanks to Io. The wiki page will ...


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It's at Jupiter's distance and beyond that ices were able to form out of the disk of material surrounding the early sun. Go much further in and there is too much energy from the sun for them to stay as solids (and will sublimate into gases); this is why asteroids are principally rocks and metals. So at this distance more of the materials of the planetary ...


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Here's something from Wikipedia (emphasis mine): The giant planets (Jupiter, Saturn, Uranus, and Neptune) formed further out, beyond the frost line, the point between the orbits of Mars and Jupiter where the material is cool enough for volatile icy compounds to remain solid. The ices that formed the Jovian planets were more abundant than the metals and ...



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