Claims of a "rare planetary alignment" are misleading; it's just visible planets. A true "golden conjunction" occurs on Sept.

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

THE search for alien life across our Solar System and beyond has so far kicked up nothing intelligent – let alone microbial.

Stargazers will be treated to a dazzling six-planet "alignment" this January.

There are eight planets in the solar system, and each travels on its own path around the sun. But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some ...

This mysterious ninth planet could be found within the next ‘two years’, one expert said (Picture: Getty Images/iStockphoto) We’re closer than ever before to knowing whether there is a ninth ...

The Planet Nine theory was based on several trans-Neptunian ... that developed in the circumstellar disk would orbit around the Sun on a more or less flat plane like the eight planets.

The thing about Planet Nine is that it could be as far away as 700 times the distance between the Earth and the sun. I mean, that is just wild—like, Neptune, the farthest official planet in our ...