Astronomers have just discovered a new celestial body in our solar system that could challenge major space theory. 2017 OF201 ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

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

The International Astronomical Union’s Minor Planet Center, which catalogs new moons and other small bodies in the solar ...

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

Astronomers have discovered a mysterious dwarf planet, 2017 OF201, far beyond Pluto. This discovery challenges existing ...

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

Scientists are intrigued after spotting a highly unusual celestial object lurking at the very edge of our solar system.

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

Hunting for the building blocks of life? Located in the asteroid belt, Ceres is likely a good bet, study finds ...

The orbit of 2017 OF₂₀₁ is so extreme that we would not be able to detect the celestial body on 99 percent of its orbit. It ...