Is it time to rethink the possibility of an extraterrestrial civilization existing in our galaxy simultaneously with humans on earth. The Drake Equation is often used to calculate the number of possible intelligent alien civilizations. Intelligent life would mean they have the ability to communicate or listen to other intelligent life if they so chose. The recent discovery of exoplanets and the rate of the discovery is new and astonishing (almost 800 as of March 2012). I thought we could have a little fun in using the Drake equation (or if you have another reason) to put a number on the number of possible planets that may or may not exist. Speculation is expected. Isaac Asimov's book, Extraterrestrial Civilization, was written in 1979 and his estimates of 20,000 possible planets still seems good. Are we really ready to upgrade this value. I recently read some speculation of millions of possibilities all with our own galaxy. I think that particular speculation was high but who is to know? Are we unique and just a fluke in the galaxy? Universe? Should we be even looking?
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