Galaxy there may be 40,000 higher SETI (Figure).

Key words: Galaxy 40 000 Higher extraterrestrial <P> </ P> <CENTER> </ CENTER> <P> </ P> <P> the Milky Way may 300--40000 a highly developed civilization in the base camp, .and is likely to have established contact with the Earth </ P> <P> World Scientific reports [tech. /]: According to foreign media reports, British experts believe that we are not alone in the universe we live in the Milky Way .may have up to 40,000 highly developed civilizations. .So far, no one can successfully detect the existence of life outside the earth there are signs. .However, there are plenty of skeptics are skeptical that these highly advanced extraterrestrial civilization exists in our planet. .Of course, this is more like a philosophical discussion areas. .In any case, simply accept the existence of "human" may not our exploration of the universe to discover all the content. .</ P> <P> researcher Dengken Fu Observatory Edinburgh trying to simulate a number of different roots scene, showing the galaxy we live. .To this end, he used that in recent years have obtained all the information on the outer galaxy, and the public during this period all the information about extraterrestrial - chemical composition, quantity and characteristics. .Comprehensive comparison of all the circumstances, Forgan concluded that the Milky Way may 300--40000 headquarters of a highly developed civilization, and is likely to have established contact with Earth. .Historically, the most famous Drake Equation in the past half a century ago to encourage all the speculation and discussion, open a wide range of habitable worlds in the great debate. .In 1961, only 31-year-old University of California astronomer Frank Drake devised a number of extraterrestrial civilizations estimating equation, which is the famous "Green Bank equation": N = R * × Fp × Ne × Fl .× Fi × Fc × L. .This formula looks a bit numerous and the possibility of it the product of a series to calculate the number of our galaxy there may be a civilized society. .We can not calculate L and Fc, so the value for N, scientists have different opinions. .Carl Sagan calculated that in the Milky Way, stars in every one million, there is a highly developed extraterrestrial civilizations, and he estimated that up to 100,000 stars each have a civilized planet. .But it was also proposed in this equation doubt an alien civilization, thereby denying the Earth outside the Milky Way than there are well-developed civilization. .If the repair Croskey the former Soviet Union, he considered that other planets have nuclear weapons, will be destroyed by nuclear war, it developed a very short life span of civilization, the Milky Way may not be other than extraterrestrial civilization. .Another view is that too much predictive value equation is not reliable. .Such as the American astronomer 麦凯尔哈特, in his view if there are advanced civilizations within the galaxy, then it'd have colonized the galaxy and so can not we have not yet found it. .This suggests that the Milky Way than any other extraterrestrial civilizations, and the Milky Way may have for life outside. .However, British experts pointed out that all come to the conclusion one way or another are just guessing, based on the real, this guess is that we do not even know where to find extraterrestrial life. .The actual situation as before, only know that "they" in the neighborhood. .</ P> </ p>.