There's this whole thing called the Drake Equation, which roughly calculates the probability of life existing on other planets, using:
the average rate of star formation per year in our galaxy
the fraction of those stars that have planets
the average number of planets that can potentially support life per star that has planets
the fraction of the above that actually go on to develop life at some point
the fraction of the above that actually go on to develop intelligent life
the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
the length of time for which such civilizations release detectable signals into space
Scientifically, it's probable given the amount of stars and planets out there.
I don't believe they've ever come to Earth, and I'm skeptical if any are even at a level of technological advancement to the point where they could.
But believing they exist? I think that's pretty normal.
The most disturbing unknown in the Drake Equation is the length of time a civilisation releases detectable signals. If we go by the most conservative estimates of all the terms, it means that it's almost inevitable for a civilisation to destroy itself after only a few centuries.
is it normal to belief in aliens?
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There's this whole thing called the Drake Equation, which roughly calculates the probability of life existing on other planets, using:
the average rate of star formation per year in our galaxy
the fraction of those stars that have planets
the average number of planets that can potentially support life per star that has planets
the fraction of the above that actually go on to develop life at some point
the fraction of the above that actually go on to develop intelligent life
the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
the length of time for which such civilizations release detectable signals into space
Scientifically, it's probable given the amount of stars and planets out there.
I don't believe they've ever come to Earth, and I'm skeptical if any are even at a level of technological advancement to the point where they could.
But believing they exist? I think that's pretty normal.
I BELIEF! DO YOU BELIEF?
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GeorgeMcBob
11 years ago
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Ono
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The most disturbing unknown in the Drake Equation is the length of time a civilisation releases detectable signals. If we go by the most conservative estimates of all the terms, it means that it's almost inevitable for a civilisation to destroy itself after only a few centuries.
Couldn't have said it better. I don't know if we will ever discover any other life in the universe, but it's likely they're out there somewhere.