Thursday, February 4, 2016

Alien Theory (part 4)

The so-called Fermi Paradox (Hart-Tipler argument) is another theory that addresses the question, Why haven't we discovered alien life? The theory highlights the contradiction between the high estimates of probability for the existence of alien life and the total lack of evidence for it. The tenets of the theory state that our sun is a common star, and there are billions of stars in the galaxy. With high probability, some of these stars will have Earth-like planets, and it would stand to reason that some of these planets would therefore develop intelligent life. Some of these civilizations would develop interstellar travel (which we Earthlings are currently developing.) Even if we consider that developing interstellar travel is likely to be slow, our galaxy could be completely explored in about a million years. When considering all this, some have pointed out that we have no convincing evidence of aliens, nor any signs of alien intelligence anywhere in the universe. The famous question essentially sums up the theory: “Where is everybody?” The “Fermi Paradox” indicates that, due to a total absence of evidence, it can be concluded that aliens don't exist.

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