Caltech astronomers studying the outer solar system announced Wednesdaythey had theoretical evidence of a giant ninth planet in the solar system, called Planet Nine.
In terms of size, Planet Nine sits somewhere between Earth and Neptune. Its orbit makes elongated loops, different from other planets, which have a more circular pattern.
The discovery comes 10 years after Pluto was reclassified from a planet to a dwarf planet since it failed to meet the International Astronomical Union's definition of a planet.
Caltech researcher Mike Brown (who dubs himself @plutokiller on Twitter) tried to lift the spirits of Pluto fans by saying another planet is out orbiting in the solar system.
"All those people who were mad that Pluto is no longer a planet can be thrilled to know that there's a real planet out there still to be found," Brown said.
Users quickly took to social media to express their sentiments about Planet Nine, and also reminded all of us to #neverforget that #planetlivesmatter.
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