Turns Out Our Solar System Might Have A 9th Planet After All

Sorry, Pluto.

Good news, everyone: Our solar system likely has nine planets again, so there's no reason to forget that number you learned in grade school. The bad news is is that the ninth planet still isn't Pluto. Instead it's an entirely new planet, according to a team of astronomers from Caltech who found evidence of its existence and are calling it Planet Nine.

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