Astronomers have uncovered a distant celestial body that may be a new dwarf planet, orbiting the Sun from more than twice the distance of Pluto. Found by researchers at the Institute for Advanced ...

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.

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

Researchers believe that 2017 OF201’s highly eccentric orbit points to a chaotic origin, possibly caused by a gravitational ...

New data captured by the James Webb Space Telescope has finally given astronomers new clues about how Pluto cools itself.

Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show opening to the ...

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

Plus, an in-depth look at how the West Texas city of Seminole reacted when a measles outbreak tore through the region.

In 2006, updated research led to Pluto ... a new study co-authored by scientists in Taiwan, Japan, and Australia claimed to have found a potential candidate for this formerly hidden ninth planet ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

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