NASA official seven forms of destruction of the earth break the end of the rumor

There appear a lot of rumors about the 2012 doomsday, but NASA assured us that they are all much ado about nothing. In Hollywood movies and the mayan calendar on December 21, 2012 as the end of the world, America's space agency, NASA, looking forward to this date, like y2k threat through, don't have to panic. It's like the agent to take "there's nothing good on" processing. But the world will end one day. Most experts believe that our sun is about 5 billion years later will become a supernova, with human perish together most of the solar system. But there are other methods of life on earth, and in some cases, may destroy the earth itself.
An asteroid collision led to the destruction of the earth is another kind of Hollywood director like the end of the world. NASA's spitzer space telescope has found evidence that this kind of situation happened in our Milky Way galaxy. Only 100 light-years from earth young stars HD172555 may have been at the center of the planetary collision, NASA has discovered its fragments, and the distinctive feature of the surrounding rock melting and evaporation. This asteroid impacts in our solar system will occur every once in a while? Some experts believe so. In fact, our moon is considered to be in an impact in the process of formation of the earth, the process is formed in the sun after happened between thirty million and one hundred million. Lava, steam and debris spread beyond the earth and eventually merged with our natural satellite.