posted on May, 15 2011 @ 11:51 AM
I think it's also important to note that if any possible extra-solar civilization is akin to us - their radio window will most likely be small.
Consider this: The first radio broadcast strong enough to escape Earth was transmitted in 1936 (Hitler's Olympic Game speech). As the world
digitizes, the radio wave length is becoming more and more obsolete and it's use continues to tapper off. If we were to cease using radio waves for
communication by 2036 - any listening extra-solar civilization would only have 100 years of listening time. We would also have to bet that they were
technologically advanced enough to receive radio transmissions. It is a very slim window and it would require a great deal of luck as they'd need to
be listening just at the right moment, right frequency, right direction.
It is not a leap of logic to assume that there are civilizations 100's, 1,000's or 10,000's of years more advanced than we are. If that is the
case, and their usage of radio waves for communication is as short as it appears ours will be, we will have already missed our window for receiving
those transmissions because we simply did not have the capability of tuning in. We must start exploring other methods now.