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

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...

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 ...

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.

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.

Scientists have discovered a colossal object approximately 435 miles wide in the frigid outer reaches of our solar system, which may qualify as a dwarf planet. Named 2017 OF201, this distant ...

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.