This was published in a crockpot journal and is likely fake: http://news.ycombinator.com/item?id=2294516
The "analysis" presented there is heavily laden with emotion, which reduces its own credibility in short order. I know nothing about the Journal Of Cosmology, but the tone of this blog entry prevents me from accepting it as useful information, it comes across more as axe-grinding. But let's assume JoC is a crackpot journal. Why is a NASA scientist publishing there? Did he decide that NASA's credibility on alien life…
He's publishing there because he couldn't publish it in a reputable journal, indicating its quality is rather low. I agree that this article doesn't take the most mature tone ever, but it breaks down what's wrong with the article itself further into it. It's unnecessary to rely on credibility at all; of the journal itself OR the fact that the guy worked at NASA.