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Territorial limit for star systems?
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[QUOTE]Originally posted by Bond, James Bond: [QB] OK, I was doing some research on this and indeed the reasoning behind the teardrop shape of the Sun's Heliosphere is that it trails behind the Sun in the opposite direction of it's travel path through the galaxy. Earth's magnetic field is a little different, the blasting of the solar wind is more powerful then Earth's velocity so the magnetic field points directly opposite to the side of Earth facing the sun much like a comet's tail. One interesting thing I learned though is that at the front of the Heliosphere where it interacts with the galactic medium, their is an area of glowing plasma. It used to be only 10 AU's in thickness but now has grown to almost 100 AU's deep. Some have speculated that this increase is responsible for some atmospheric changes not only on Earth but throughout the solar system including the Moon who's once almost non-existent atmosphere is growing gradually (though it's still extremely tenous). Here's a page discussing the growth of the forward edge of the Sun's Heliosphere, though I believe some of it's doomsday predictions and links to just about every disaster on Earth are a bit farfetched, it is still an interesting read: http://www.detailshere.com/solaractivity.htm [/QB][/QUOTE]
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