Scientists' hunt for a mysterious planet at the edge of our solar system might have turned up results. A US-trio appears to ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

Discovery of a possible dwarf planet suggests our cosmic backyard holds many more secrets to uncover It is an evocative idea ...

Unveil the mysteries of Saturn, the often overlooked beauty of our solar system. From its ferocious storms to mesmerizing ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

There’s a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...