Researchers found a remarkable correlation between the meteorite’s source and the predicted position of Planet Nine. These results are consistent with the “messenger hypothesis”, according to which ...

The Planet Nine theory was based on several trans-Neptunian objects, those that are beyond the eighth planet, with highly “tilted” orbits compared to the ecliptic plane. This seemed odd and ...

One problem with finding so-called Planet Nine is how far-flung it would be (Picture: Getty Images) Not everyone is convinced. ‘The available data are subject to many selection effects and ...