‘Astronomers have found likely evidence of an Earth-like planet in the Solar System that may be circling the Sun in an orbit beyond Neptune.
Physicists, including those from the National Astronomical Observatory of Japan, said the planet could be much closer than the hypothetical Planet Nine thought to exist in the far outer edges of the Solar System.
Several studies in the past have suggested there is likely a yet-undiscovered planet beyond the Kuiper Belt – a stellar disk of materials such as asteroids, space rocks, comets around the Sun in the outer Solar System past the orbit of Neptune.‘
www.independent.co.uk/space/mysterious-planet-hiding-solar-system-b2404903.html
The study…
iopscience.iop.org/article/10.3847/1538-3881/aceaf0
h/t A Deplorable Neanderthal