"Likely to find small microbes, not little green men"? Really? you honestly want me to believe that in this entire universe we are the only 'humanoid-type' species out there? I don't think so.. maybe the scientists these days feel they will only find microbe-sized alien life due to the technology they currently have available to them. Not to mention space exploration is extremely limited due to the lack of light speed travel.
http://www.usatoday.com/story/news/nation-now/2015/04/08/nasa-chief-alien-life-10-years/25456201/
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