A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

Astronomers have long suspected that an enormous, unseen planet is hiding somewhere far beyond Neptune, quietly shaping the ...

"It's really difficult to explain the solar system without Planet Nine," says Caltech astronomer ... than we thought Working in Delhi? This year’s heat will could you poorer by ₹1.2 lakh.