Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the ...

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

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

Explore the discovery of seven Earth-like planets beyond our solar system.

Astronomers have announced the discovery of a new dwarf planet in our solar system, named 2017 OF201. Located far beyond ...

Recent observations by JWST of TRAPPIST-1 c ruled out a thick carbon dioxide atmosphere, indicating that the planet is not as ...

In fact, they identified 2017 OF 201 in 19 different images, captured over seven years ... the most distant region in our solar system, which is home to many comets, and then sent back ...

A new member of the solar system has been detected, the second-largest of its kind, suggesting there may be more like it ...

Based on the gravitational pull, scientists believe the distant world would have the mass of seven ... also make our solar system seem a little more 'normal.' 'Surveys of planets around other ...

Our solar system ... the outskirts of the solar system is the activity within the Kuiper Belt, an unusual clustering of icy bodies -- including comets and dwarf planets -- which stretches from ...

A team of astronomers led by a British student found traces of the first-ever-discovered planet moving in a polar orbit ...