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While so far almost nothing is still <P>, but scientists have never stopped the search for Earth-like planets. .No matter the outcome of their efforts, be sure that only actions have results. .</ P> <P> 2006 年 7 months, physicist Stephen Hawking in Yahoo's "Yahoo! Answers" column raised the question: "In a political, social and environmental chaos of the world are human in the next .A hundred years will be how to survive? "in all of the 25,489 answer, Hawking favorite answer came from a network called" Banfeng scientists "of the people. .He said: "With increasing threats to survival, human creativity is also enhanced. I believe that human beings are adaptable species, previously able to adapt to the future energy today ...... the same may not be re-used for a century .However, the widespread use of energy today, a century ago, it does not for human use, so we are likely to find other resources before the resources run out. </ P> <P>, of course, all accelerating the speed of evolution, humans may also .suffered the devastating Black Death as a disaster, but I believe that the disaster will be upon the prosperity of mankind, but also to survive, just as the sun will also rise tomorrow. "Hawking my answer is" I do not know the answer, this is .the reason I raise this issue. "But Hawking also said: face the threats may come, if human beings can find a way out into space, will be able to survive. .</ P> <P> Many researchers believe that the days of finding suitable for human survival is possible outside the home. .Discovered the first planet outside our solar system more than ten years, humans have discovered about 200 such planets. .In the next 10 years, NASA will look for Earth-like planets for launch, "Space Interferometry Mission" detector. .In the most likely to have Earth-like planets in the 120 stars, the scientists estimated that at least six stars with planets close to Earth's mass, 24 stars have a mass close to twice the planet Earth, as the quality of close to 3 times the planet Earth, should each .stars are. .</ P> <P> through the simulation of the formation of the solar system, planetary scientist at the University of Colorado Sean Raymond in September 2006 in "Science" magazine published an article that: around the Milky Way about 1 / .3 class solar system galaxies may have Earth-like planets exist. .</ P> <P> In addition, although we have yet to prove the existence of extraterrestrial found conclusive evidence of the emergence of life can not determine whether the result of an accident or necessity, but many signs are preferred the latter. .The basic components of life on Earth was twenty, including water several simple molecules, the scientists in the Milky Way are found in many parts of these molecules exist. .The latest tests showed that carbon dust on the planet fell particles can promote the formation of amino acids, many of these planets may be the basic components of life. .Some researchers have estimated the number of amino acids may account for the existence of the planet 10% of the total, and some even think that the actual number may be more. .</ P> <P> </ p>.