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Well, this is pretty disappointing. Exactly one week ago, NASA got us really excited about a potential discovery on Mars that was going to be "one for the history books." Turns out, that NASA employee from the Curiosity rover team was just really excited about the mission — and not one specific, universe-altering discovery.

Mashable's Amanda Wills got NASA Social Media Manager Veronica McGregor to explain that the whole thing was really just a really big misunderstanding. "What Grotzinger was actually trying to convey is that Curiosity’s data over her entire two-year mission will further our knowledge of Mars more than ever before, making it a historical mission," Wills writes. "It’s always difficult to quell rumors like this one," McGregor told Mashable. Apparently McGregor tried to clear things up using Curiosity's Twitter account the following day:

What did I discover on Mars? That rumors spread fast online. My team considers this whole mission "one for the history books" — Curiosity Rover (@MarsCuriosity) November 21, 2012

The Rover's fake-but-real account is normally pretty silly, so it's not exactly surprising no one took it seriously, and that they had to clarify it further.