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

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

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 ...

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly ...

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.

But at its furthest point during its orbit, 2017 OF201 is more than 1,600 astronomical units from the sun, while the closest point on its orbit is about 45 astronomical units.

Gymnast and social media sensation Livvy Dunne [featured in the June 2023 issue of (201)] was spotted at the 151st Kentucky Derby wearing a black-and-white polka-dot mini dress with an oversized hat.

Another homebuilder has joined the Placer One project, with Taylor Morrison recently closing escrow on what will be 201 lots ...

2017 OF201’s elongated orbit makes it an outlier from the clustered objects, but Yang’s calculations suggest that the orbit of 2017 OF201 should remain stable over roughly the next billion years.

The mass of 2017 OF201 is estimated to be about 20,000 times smaller than Earth’s and 50 times smaller than Pluto’s. “We don’t know the shape yet.

The mass of 2017 OF201 is estimated to be about 20,000 times smaller than Earth’s and 50 times smaller than Pluto’s. “We don’t know the shape yet.

The researchers said 2017 OF201 was identified in observations by telescopes in Chile and Hawaii spanning seven years. “It is potentially large enough to qualify as a dwarf planet.