No, the World Is Not Going to End This Weekend

There are a lot of reasons Caltech physicist Randall Smith didn't recently announce that a rogue planet named Nibiru is going to destroy Earth this weekend — not the least being that "Randall Smith" of Caltech doesn't exist. That's the same reason — the doesn't-really-exist reason — that NASA spokeswoman Heather Cartwright didn't publicly confirm the fictional Smith's findings.

And as for Nibiru itself? It ain't real either.