Ninth? Did they let Pluto back in? Nope, American astronomers at Caltech have found evidence for a new ninth planet beyond the Kuiper Belt, 10 times as massive as Earth, either a super-Earth or mini-Neptune.
*"The group’s calculations suggest the object orbits 20 times farther from the Sun on average than does the eighth - and currently outermost - planet, Neptune, which moves about 4.5 billion km from our star.
But unlike the near-circular paths traced by the main planets, this novel object would be in a highly elliptical trajectory, taking between 10,000 and 20,000 years to complete one full lap around the Sun."*
But what do we call it? Personally I think the sisterhood is a bit underrepresented in the planets, so I’d call it Juno. Or you could complete the Archaic Triad with Mars and Jupiter and call it Quirinus.