1 Corinthians 3:10
"Within the uncertainties of involved astronomical and biological parameters, the Drake equation typically predicts that there should be many exoplanets (< 100 to millions) in our Milky Way Galaxy hosting active, communicative civilizations. These optimistic calculations are however not supported by evidence, which is often referred to as the Fermi paradox.
Dr. Frank Drake devised an equation in which several factors are multiplied together to estimate the number of intelligent civilizations in our Galaxy capable of making their presence known to humans:
N = R * fp * ne * fl * fi * fc * L
N: the number of civilizations in the Milky Way Galaxy whose
electromagnetic emissions (radio waves, etc.) are detectable;
R: the number of stars formed annually;
fp: the fraction of those stars with planetary systems;
ne: the number of planets per solar system with an environment suitable for life;
fl: the fraction of suitable planets on which life actually appears;
fi: the fraction of life-bearing planets on which intelligent life emerges;
Dr. Frank Drake devised an equation in which several factors are multiplied together to estimate the number of intelligent civilizations in our Galaxy capable of making their presence known to humans:
N = R * fp * ne * fl * fi * fc * L
N: the number of civilizations in the Milky Way Galaxy whose
R: the number of stars formed annually;
fp: the fraction of those stars with planetary systems;
ne: the number of planets per solar system with an environment suitable for life;
fl: the fraction of suitable planets on which life actually appears;
fi: the fraction of life-bearing planets on which intelligent life emerges;
fc: the fraction of civilizations that develop a technology that produces detectable signs of their existence;
L: the average length of time (years) such civilizations produce such signs.
Assigning values to the seven variables has been an educated guessing game, leading to predictions that such civilizations should be widespread. But if that is true, why is there no conclusive
evidence of their existence?
This contradiction is known as the Fermi paradox, named for the Italian and later naturalized American nuclear physicist and Nobelist Dr. Enrico Fermi, who informally posed the question to colleagues.
“Life has been around on Earth for about 4 billion years, but complex organisms like animals didn’t appear until about 600 million years ago, which is not long after the modern episode of plate tectonics began,” Professor Stern said."
L: the average length of time (years) such civilizations produce such signs.
Assigning values to the seven variables has been an educated guessing game, leading to predictions that such civilizations should be widespread. But if that is true, why is there no conclusive
This contradiction is known as the Fermi paradox, named for the Italian and later naturalized American nuclear physicist and Nobelist Dr. Enrico Fermi, who informally posed the question to colleagues.
“Life has been around on Earth for about 4 billion years, but complex organisms like animals didn’t appear until about 600 million years ago, which is not long after the modern episode of plate tectonics began,” Professor Stern said."
SciNews