Quote:
Originally Posted by dyna mo
The basic points of the argument, made by physicists Enrico Fermi and Michael H. Hart, are:
The Sun is a typical star, and relatively young. There are billions of stars in the galaxy that are billions of years older.
Almost surely, some of these stars will have Earth-like planets. Assuming the Earth is typical, some of these planets may develop intelligent life.
Some of these civilizations may develop interstellar travel, a technology Earth is investigating even now (such as the 100 Year Starship).
Even at the slow pace of currently envisioned interstellar travel, the galaxy can be completely colonized in a few tens of millions of years.
According to this line of thinking, the Earth should already have been colonized, or at least visited. But no convincing evidence of this exists.
Furthermore, no confirmed signs of intelligence elsewhere have yet been spotted in our galaxy or (to the extent it would be detectable) elsewhere in the observable universe.
With no evidence of intelligent life other than ourselves, it appears that the process of starting with a star and ending with "advanced explosive lasting life" must be unlikely.
we are all alone peeps.
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So because we haven't seen aliens that is proof no life exists? I thought you were smarter than this. The nearest star system is 4.3 light years away, so even if we could travel at the speed of light (physics says it is an impossibility for matter to travel at the speed of light) it would take 4.3 years to get there. If we could perfect matter/anti-matter space travel the best we could do is 10% the speed of light so that would take 43 years at that speed. And thats just to the nearest star. To the other side of the Milky Way? 100,000 light years (a million years). The closest galaxy? 2.2 million light years.
There are over 300 billion stars in our galaxy and the amount of planets could well be over 3 trillion, count moons and that could be as high as 30 trillion. Of those the number of Earth like planets are at least in the billions (scientists estimate close to 9 billion). On top of this there are over 100 million galaxies. That means there are an estimated 900000000000000000 Earth like planets in the entire Universe.
Life in the Universe is not a mathematical probability it is a mathematical certainty.