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Reading the answers for your question is very amusing, these people can write off events caused by either human or nature. Science in its brief form is the effort to discover, and increase human understanding of how the physical world works. Without theories we would be nowhere, but with theories and speculation you receive answers maybe not the one you have researched, but others may present themselves. In order to correlate the two (LHC and the Brown Dwarf) you need to look at the hype and then look into the facts. You must weigh both sides equally, and then formulate your assumption. This is simply not done with the answers you have received. Most people that will review your question will indefinitely write off Planet X or Nibiru, and the simple fact for this, they have not been told from a credited source of its existence. To add to this, not everyone has a powerful infrared telescope in there backyard beside there grill. So this is where the conspiracy will come into play. If you were in your government’s top seat would you release anything to the public concerning this, not knowing the impact or effects to Earth? So what are the theories about Planet X or Nibiru? This has gained major attention with Zecharia Sitchin. Some of his research included; Inscribed on seven clay tablets, the text described how the inner and outer planets appeared; how an invading celestial body (“Nibiru”) collided with and broke up the planet ‘Tiamat’, creating “a new heaven;” and how Nibiru, captured in a great elliptical orbit, became the twelfth member of the Sun’s Family - Sun, Moon, and ten planets including Earth, Nibiru and Pluto. These ‘celestial gods’ were matched by a pantheon of twelve deities on Earth.(Planet X summarized)So long elliptical orbitCannot be seen from the naked eye at this timeShould be able to see in spring 2009 Comes close to Earth estimated every 3500 years or 25500 years (in sequence with the last Ice Age)Possible brown dwarf, or in a Jupiter type stateA little bigger then the size of our MoonAncient Sumerians did talk of this place (or one of its moons).
http://www.sitchin.com/http://www.sitchin.com/nasa_looking.htm

Then Planet X gets labeled a brown dwarf or Nemesis.http://www.2012online.org/2012research/nemesis.htmlhttp://en.wikipedia.org/wiki/Nemesis_(star)http://www.space.com/scienceastronomy/06...

In the end there will be people that come to admire the fame from predicting false doomsdays, http://www.2012online.org/2012research/e...
And others will try and exploit what will happen in 2012. But I will tell you this, if Planet X or Nibiru is out there, we are in for one hell of a ride. We can only begin to use a scientific approach to determine what the likely scenarios are. The LHC is in since a giant magnet, used for various scientific research. Some would argue that it could help correct the poles shift or reversal from Planet X or Nibiru, but again this is just theory. Does this correlate to us right now? No it does not, unless it is a mass cover up like the above answer states. And just to throw this out, December 21, 2012 is not like a light switch, it does not turn on instantly and affect the Earth. We have actually seen signs leading up to this. But you cannot look at the mere past few years.

Little Ice Age http://2012online.blogspot.com/2008/09/l...

Some excerpts from religious documents that back this up:Many earthquakes Appearance of sinking into the earth, transformation into animals and false-accusationsThe three great sinking of the earth The appearance of smoke in the sky The rising of the sun in the west (Nibiru or Planet X the brown dwarf)The beast of the earth [Daabbat ul-Ard] (another quote for a super volcano)The fire which brings the people together A wind that will take the souls of all Muslims and only leave infidels on Earth. (solar storms?)Increase in rain but decrease in produceSigns, upheavals of the elements, and angels prepare the way for the coming of the Lord, D & C 88: 86-94. Darkness to cover the earth, (sound like super volcano)D & C 112: 23-24The sun shall be darkened and the moon shall not cause her light to shine, Isa. 13: 10 (Joel 3: 15; D & C 29: 14). Great calamities shall precede the Second Coming (of the sun, meaning another planet or brown dwarf?) Matt. 24 (JS-M 1). The day cometh that shall burn as an oven, Mal. 4: 1 (3 Ne. 25: 1; D & C 133: 64; JS-H 1: 37).The Nephilim (ancient fallen people) shall speak as a voice from the dust, Isa. 29: 4 (2 Ne. 27).

Good luck on your search

The 10th Planet - http://space.about.com/od/astronomynews/a/planetx.htm