Science Fiction and Reality: extraterrestrial

On talking about a UFO is unscientific, then this, to talk about the science of extraterrestrial?!

Mankind had originally thought that their own place to live are the center of universe, and later discovered that the Earth is only a small part of the story. Also the Earth of human thought are the center of the universe, and later discovered that the solar system are a small part of the story. Also the solar system of human thought are the center of the universe, and later discovered that the solar system is the Milky Way, and even the universe, the number of one trillion more than the Milky Way a. In this process, we think there will always be human in the universe are you lonely? The universe there is no other life?

Answer this question are at an early age will lead to the killing. Year 1600, a Giordano Bruno called the Western monks, on the earth because of him other than the question whether there is any other biological, have been the Holy See in Rome, the streets will be stripped him, upside down, and finally burned in the fire on. Obviously does not enjoy the Holy See has a higher level, the concept of biological existence, as it would impact on the authority of their own ah …

But Bruno is obviously the last laugh - a new detection technology shows around the planet have planets are very common (currently about once every two weeks would have found a planet a planet), this also means that a planet which has a sufficient the development of the life conditions of high probability. Has three full-time looking for the near future planetary satellite to be launched, respectively, appointed as Corot, Kepler and Terrestrial Planet Finder.

Keplar exploration satellite

At present, scientists looking for extraterrestrial life is divided into two main directions, one is from the similar to the conditions of the Earth This point of view; the other is from the extraterrestrial civilization electromagnetic signals This point of view. First term, said the conditions similar to the Earth, which is the bar! Foundation of life on Earth are carbon and water to form organic matter, as well as the organic chemical reactions that took place between. Most of the organic matter only in a certain temperature (and liquid water as the media) can be best to play a role, thereby limiting the carbon-based biological survival of the most suitable environment for the development must be at a temperature between zero to one Baidu . Usually this limits the planets must be in the planet outside of a certain range, and the orbital eccentricity can not be too high - but in fact this condition is not harsh, in the Milky Way should have thousands.

The problem is that we do not know how carbon-based life began. Organic matter on the first come from, there are two schools of argument. School of thought, when dissolved in seawater has integrated all the amino acids of raw materials, relying on lightning provided the energy is enough basic organic polymer. If this is the case, then aggregation will be a large extent depend on the various planets at the time of the early state of the interstellar carbon-based biological fear no more. Those who believe that the organic matter are likely to have dropped onto the ground from outer space with the meteorite. Around the sun is a third generation of the planet, which means the sun during the formation of the raw materials used, from a lot of the SELF in the past remnants of the planet (this is why there is water, gold, land, fire and other heavy elements of the planet). In this way, it is possible the Earths organic substances, are in the last generation of planet formation, when the planet SELF spread out with the explosion, and then came to earth as meteorites (Spore is the adoption of this argument). If the latter, that the universe emerged in organic carbon-based life of much greater chance.

Currently looking for Class of the Earth planets Nothing further progress, but if found, then the benefits are twofold. First of all, if the above have lives, then we can clearly confirm the existence of extraterrestrial organisms are (and perhaps homologous with us then!) Even if not found any biological, at least we have found a good place for immigrants.

The United States VLA radio telescope array in New Mexico

The second direction of looking for extraterrestrial life is to detect electromagnetic waves. The theory is that any sufficiently advanced alien civilization, whether or not carbon-based, should be owned by the electromagnetic wave as the only means of communication ability. The Earth from the first radio broadcasting started, it will be non-discriminatory in all directions constantly declare their own existence, if there are aliens in the monitor, it should be found in space has such a signal source, launching a variety of non-natural signals (Please refer to the film Contact). Conversely, in the face of the earth and we are monitoring the universe, to see if there is such a natural source. This is among the most famous is the SETI (Search for Extraterrestrial Intelligence) program. SETIs predecessor from 1960 onwards on the monitor 1420GHz the frequency, look for extraterrestrial signals has not suspected anything, but with the deletion of the government budget in 1995, SETI identity to set up a non-profit organizations. But so far, what else is found to have no concern about people: Yes we have enough patience, or we should not only stare at a specific frequency watch? We have the means to simultaneously monitor all of the frequency of it?

Created Spore creatures.always felt that the biological effects of the Earth was still too …

President of the aliens look like? Sci-fi movie where aliens have become the kind of person person mode, but that of course are for the convenience of an actor. At present, symmetrical, have head and tail ends of the animals on earth accounts for the main axis (plant is not symmetrical), but even in the face of the earth, or have a lot of other configuration, such as the starfish is the radiation symmetry, there is only one body cavity openings. So do not necessarily look like aliens, but a reasonable guess that they should be organ electromagnetic induction (human on called the eyes) has to crawl objects organs, as well as the same bio-communication and other organs. In addition, all the imagination. Interested in alien has made friends, you can play Spore XD.

Finally, aliens are more advanced? They know that U.S. exist? Its hard to say. Higher civilization to the point of view of the universe, the Earth did not have much they might want resources (directly to the exploitation of a large ore-sing is not faster), but the other hand, if the Earth really has what they want , it has the capacity of any of the other side from the galaxies of the universe from civilization, nor is it perhaps that we can match it. Microbiology (War of the worlds)? Computer virus (ID4)? Free all right, like the Galaxy travel guideas directly to the solar system to open up Galaxy Express Road is most likely the end.

views, rather than human beings to discover their own extraterrestrial biological low. If aliens have found … we can only hope they have told us are not interested in the …

Part I - Science Fiction and Reality: UFO