Planet Y: In a remarkable discovery that could reshape the prevalent scientific view of our solar system, astronomers have found evidence of a 'hidden' planet on the outskirts of our cosmic ...

The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have dubbed ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...