[Kuehn12]

I am about sick of hearing people pooh pooh the likelihood of the existence of extra solar life. One scientist said according to his measurement that the universe might be as much as 156 billion light years in diameter. Just one film plate of a cluster of galaxies has hundred, thousands, perhaps millions of galaxies in it. They are called Super Clusters. Our galaxy alone is about 70,000 to 100,000 light years across and filled with 400,000,000,000 stars, and many of them are main sequence stars. Now imagine this one civilization among all those stars has been technologically advance for say 10,000 years. Now tell me it is impossible or likely that there might even be older civilizations, so might even have visit and continue to visit are little back water part of the Milky Way Galaxy. I only entertain the possibility now that some future generation of man, assuming we don't blow ourselves in the interim, will get a real global close encounter of the third kind. For now we are the primitives of the galaxy still clubbing each other over the head because of minor differences in our skin color, religion or the way organize our societies. And of course there is the stupid reasons people find to kill one another. If I were an advance culture, I would toon in on the earthlings and have a good laugh, and be very afraid that their madness might spree across the galaxy.

[Sam Cree]

I also don't quite understand the ridicule that goes with this subject. Granted, there have been hoaxers and charlatans, but there have also been plenty of qualified witnesses, including military.

I've seen reasoned arguments that make the case that life is rare in the universe, or that the distances are great, but I have yet to see a reasoned argument make the case that life on earth is unique.

That other life exists is plausible, that it may have come here is surely possible.