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Slate specializes in punditry rather than reportage, I wouldn't worry too much about it. If it's BS NASA will clarify or deny within a few hours, but there have been hints leaking from several sources about some exciting news that was still under embargo while they continue testing. I think it's OK to post since it includes a legit source/scientific forum.

It's a newspaper, not a blog, and the cited source, ANSA, is "the leading wire service in Italy": http://en.wikipedia.org/wiki/Agenzia_Nazionale_Stampa_Associ...

Ultimately, the weak link is the guy at the conference, not the site where it's reported.

"La Gazzetta del Mezzogiorno" is not a blog, it's a newspaper. The news was reported by other Italian newspapers too, quoting Charles Elachi's words during a speech held in Rome.