OF201, the object belongs to the same all-star family as Pluto: dwarf planets. Its diameter, roughly 435 miles (700 km), is ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

Solar System May Host Hundreds More The Kuiper Belt, the donut-shaped region beyond Neptune, was once thought to be relatively empty.However, the discovery of 2017 OF201 raises fresh questions about ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The discovery of dwarf ...

Researchers found a ‘planet’ smaller than Pluto. A new planetary body named 2017 OF201 was identified by a team of researchers from the Institute of Advanced Study in New Jersey and later confirmed by ...

In searching for the elusive Planet Nine, researchers instead turned up a different resident in our cosmic backyard.

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets ...

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 years to complete one orbit around the sun. The object, known as 2017 OF201, ...