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2007-06-25 15:12:37
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answer #1
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answered by lithiumdeuteride 7
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The Fermi paradox is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial civilizations and the lack of evidence for or contact with such civilizations.
According to some observers, the extreme age of the universe and its vast number of stars suggest that extraterrestrial life should be common. Discussing this proposition with colleagues over lunch in 1950, the physicist Enrico Fermi is said to have asked: "Where are they?" Fermi questioned why, if a multitude of advanced extraterrestrial civilizations exist in the Milky Way galaxy, evidence such as probes, spacecraft, or radio transmissions has not been found. The simple question "Where are they?" (alternatively, "Where is everybody?") is possibly apocryphal, but Fermi is widely credited with simplifying the problem of the probability of extraterrestrial life. Wider examination of the implications of the topic began with Michael Hart in 1975, and it is sometimes referred to as the Fermi-Hart paradox.
There have been attempts to resolve the Fermi Paradox by locating evidence of extraterrestrial civilizations, along with proposals that such life could exist without human knowledge. Counterarguments suggest that intelligent extraterrestrial life does not exist or occurs so rarely that humans will never make contact with it.
A great deal of effort has gone into developing scientific theories and possible models of extraterrestrial life and the Fermi paradox has become a theoretical reference point in much of this work. The problem has spawned numerous scholarly works addressing it directly, while various questions that relate to it have been addressed in fields as diverse as astronomy, biology, ecology and philosophy. The emerging field of astrobiology has brought an interdisciplinary approach to the Fermi paradox and the question of extraterrestrial life."--wikipedia
To the objective (or open minded ) person there are several possibliities:
1. Earth is unique-- Earth is the only planet capable of supporting life as we know it.
2. Earth is not unique in that there is life elsewhere but there are no other advanced civilizations in the universe.
3. Earthlike planets are extremely rare therefore any advanced civilizations are to far away for us to contact.
3. Earthlike planets are not rare, there are many civilizations out there but they are so far ahead of us technologically that they do not wish to be contacted.
4. Earthlike planets are not rare, there are many civilizations out there but their form of life may be so different than ours that communication may be impossible.
5. The Zoo hypothesis--we are being deliberately isolated by some advanced race wishing to protect us or cultivate us technologically.
6. We have been contacted but our governments feel that the general public is not "ready" for such a discovery and the aliens have respected that viewpoint.
7. They are already amoung us but we cannot see them (deliberate hiding or so differnet that our eyes can't see them)and our government doesn't know.
2007-06-25 16:14:20
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answer #2
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answered by Deslok of Gammalon 4
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If there is it hasn't been discovered yet. However I am a firm believer that life must exsist on another planet if it exsists here. It would be weird if we were the only planet in the entire universe that contained life
2007-06-25 15:15:02
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answer #3
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answered by Anonymous
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Yes. There is possible that there is life on at least 2 planets in every solar system.
2007-06-25 15:18:08
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answer #4
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answered by ? 5
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Yes there are life of any planet. And they know how to put two words together too.
2007-06-25 15:23:15
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answer #5
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answered by chameleon 4
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I dont think there is life on other planet.
2007-06-25 15:22:53
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answer #6
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answered by syu 2
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