Discussion of the article "
Why is the Universe Silent? Search for Extraterrestrial Intelligence"
For several decades now attempts have been made to "listen" to the Universe in search for signals from extraterrestrial rational beings. Although SETI programs are equipped with cutting edge optical and radiotelescopes, computers and other intricate instruments, no meaningful signals have so far been received from outer space. Now we have no shortage of sophisticated equipment to discover planets in remote constellations; up to 20 new planets are discovered every year. It has been calculated that the total number of stars in the Universe is roughly 10 billion x 10 billion. Therefore, the number of cold celestial objects, or planets, must be of the same order of magnitude. Not very long ago it was discovered that asteroid falling on our planet often contain fragments of organic molecules. This means that "seeds" of life can travel over the Universe (as postulated by the panspermia theory). Unless we stick to the opinion that our civilization is a unique phenomenon, it is reasonable to presume that evolution producing intelligent beings and, hence, civilizations could have occurred on other planets throughout the Universe at different times...
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