We've known for over 30 years that there are other stellar systems in our galaxy, but we don't have any idea how many there ...

Astronomers have found dozens of new planetary moons and small-body satellites in the last few years alone ... in the solar system. One such world is the elusive Planet Nine — a hypothetical ...

"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.