Astronomers have found a new minor planet beyond Pluto. This object, named 2017 OF201, is quite large. It orbits far from the ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

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

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

The discovery of 2017 OF201 is significant, as it challenges the hypothesis of Planet Nine, a hypothetical planet thought to ...

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

At the very edge of our solar system, beyond the grasp of Neptune and even past the icy sprawl of Pluto’s domain, a new ...

On May 21, the International Astronomical Union’s Minor Planet Center announced the discovery of 2017 OF 201, which, because ...

Scientists believe such an extreme orbit means the object was pushed and pulled by the gravity of giant planets like Jupiter ...

They booted it out because there appeared to be a bunch of other big rocks just like Pluto out beyond ... is a planet. Another expert, Gareth Williams, associate director of the IAU's Minor ...

Over the decades scientists continued to find similarly large objects in Pluto's neighborhood, a region of the solar system beyond the orbit ... head of the IAU's Minor Planet Center based in ...

In 1846, Neptune, the fourth of the giant planets beyond the asteroid ... are sometimes called "minor planets." While some people mourned the passing of Pluto from mainstream planet to this ...