After speaking with some researchers, it has been announced on an optimistic note that there is a good possibility of discovering alien life within the next 25 years. There are many different methods being used in the ever-expanding search, all of which are at least attempted by these researchers. They talk of even some nearby moons and planets on which life may one day be sustainable. Scientists are also looking for any kind of signals from outer-space including but not limited to radio, infrared, or optical waves. Each of the 4 billion stars in our galaxy average to about 1.6 planets each, and it is estimated that about every one out of five of those could be Earth-cousins. It will be interesting to see how this research progresses.
http://www.csmonitor.com/Science/2014/0528/Will-we-meet-aliens-in-the-near-future-video
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