For those of you who felt stunned and betrayed when Pluto got demoted from planet status, this may come as a bit of a shock. It turns out that two undiscovered planets bigger than Earth may be lurking at the icy edge of our solar system well beyond Pluto.
That’s according to a team of British and Spanish astronomers, who came to that conclusion after observing the strange behavior of more than a dozen faraway space rocks, called “extreme trans-Neptunian objects” (ETNOs).
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The new research was published on Jan. 11 in the journal Monthly Notices of the Royal Astronomical Society Letters.
