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Originally posted by tauempire
Has anyone read about the drake equation?
Combine that with the fermi paradox and you only have for answers in my humble opinion.
1) We really are alone in the universe.
2)We are just to far spread out and in too few numbers(read the drake equation and it says that the estimate of advanced civilizations in the galaxy are only 10)
3) We evolved around the same time and we just dont have the technology to contact each other...would we even want to?
4) combination of 2 and 3
theres a big difference between belief in ET life and belief in a god...
Originally posted by tauristercus
Originally posted by tauempire
Has anyone read about the drake equation?
Combine that with the fermi paradox and you only have for answers in my humble opinion.
1) We really are alone in the universe.
2)We are just to far spread out and in too few numbers(read the drake equation and it says that the estimate of advanced civilizations in the galaxy are only 10)
3) We evolved around the same time and we just dont have the technology to contact each other...would we even want to?
4) combination of 2 and 3
I couldn't have created this thread without being aware of and checking out the Drake Equation. This equation formulated by Frank Drake back in 1961 was an attempt to estimate the number of civilizations in our galaxy capable of interstellar communication
Here it is:
N = R* × fp × ne × fl × fi × fc × L
and here are what each of the factors represent:
N Present number of extraterrestrial races capable of interstellar communication
R* Mean rate of star formation, averaged over the lifetime of the Galaxy
fp Fraction of stars that have planets
ne Average number of planets in a planetary system suitable for life
fl Fraction of suitable planets on which life actually develops
fi Fraction of life-bearing planets on which intelligent life develops
fc Fraction of intelligence-bearing planets on which the capacity for interstellar communication develops
L Average lifetime of a technological civilization
Unfortunately however, of the seven factors that appear on the right side of the Drake Equation, only one (R*) can be estimated at present with any degree of confidence. The remaining factors can only be guessed at based on our current understanding. Current and near-future research on extrasolar planets will gradually reduce the uncertainties in three other factors, fp, ne, and fl. However, the values of the remaining three factors, which relate to the evolution of extraterrestrial intelligence and technology, are likely to remain a matter of pure speculation for a very long time, unless contact is made with a more advanced civilization which could convey this knowledge immediately.
So depending on what you decide to plug into the Drake Equation, you could get anything from less than 1 to more than 1 billion ... so not very helpful at all.
Your point (1):
From a mathematical point of view, statistically it is so improbable that we are the only intelligent race in the universe that it's almost a certainty that there are others.
Your point (3):
Based on the age of our galaxy at approximately 13 billion years and the fact that life on Earth only appeared on Earth approximately 4 billion years ago, that leaves a whopping 9 billion years for the emergence of many other intelligent species prior to our own.
Originally posted by tauristercus
Your point (3):
Based on the age of our galaxy at approximately 13 billion years and the fact that life on Earth only appeared on Earth approximately 4 billion years ago, that leaves a whopping 9 billion years for the emergence of many other intelligent species prior to our own.
Originally posted by nik1halo
Originally posted by tauristercus
Your point (3):
Based on the age of our galaxy at approximately 13 billion years and the fact that life on Earth only appeared on Earth approximately 4 billion years ago, that leaves a whopping 9 billion years for the emergence of many other intelligent species prior to our own.
Bearing in mind however that I'm sure I read somewhere (I think it was "A brief history of time") that only second generation or greater stars are capable of having planets orbit them, as it's the debris created by a supernova of a first gen. star that forms the planets in the first place. This little fact sheds a few billion years off from the creation of the Universe for any star with a planet and therefore any civilization.
Originally posted by nik1halo
Originally posted by tauristercus
Your point (3):
Based on the age of our galaxy at approximately 13 billion years and the fact that life on Earth only appeared on Earth approximately 4 billion years ago, that leaves a whopping 9 billion years for the emergence of many other intelligent species prior to our own.
Bearing in mind however that I'm sure I read somewhere (I think it was "A brief history of time") that only second generation or greater stars are capable of having planets orbit them, as it's the debris created by a supernova of a first gen. star that forms the planets in the first place. This little fact sheds a few billion years off from the creation of the Universe for any star with a planet and therefore any civilization.
Originally posted by Helmkat
reply to post by tauristercus
Wonderful thread OP! Kudos!
Now let me answer the question of where are they. Using the best technology I could obtain I constructed a fantastic device. I call it "Cup on string", its a study in elegance and a marvel to behold in operation! .....
Originally posted by LuckyStrike
What's to say that we haven't already begun to colonize the galaxy at some point in the past? Possibly, a previously advanced civilzation of humans here on earth were able to achieve interstellar travel and left before a big global wide cataclysm happened. This could have happened millions of years ago...Most evidence of any civilization could have easily been erased over millions of years.
Originally posted by tauristercus
Stars that explode as supernova are massive and short lived, less than a million years. The amount of time required for a star to form out of an interstellar nebula is less than a million years.
Source: Stuart Ross Taylor, Solar System Evolution: A New Perspective, page 53