The International Astronomical Union’s Minor Planet Center, which catalogs new moons and other small bodies in the solar ...

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

Astronomers announced the discovery of a new dwarf planet, provisionally named 2017 OF201, located in the remote outskirts of ...

NASA scientists expected something strange when they planned a mission beyond Pluto - but Arrokoth exceeded all predictions. This object, discovered after New Horizons launched, turned out to be a ...

The Altjira system is part of the same family of KBOs as another object named Arrokoth. NASA’s New Horizons spacecraft visited Arrokoth in 2019, revealing its peanut-like shape. That shape told ...

Another target was the Kuiper Belt and, specifically, an object called Arrokoth. NASA says Arrokoth is the most distant object that a human-made craft has explored up close. Along the way ...

NASA’s New Horizons flyby of Arrokoth in 2019 revealed a pristine, contact-binary KBO resembling a cosmic snowman, confirming that gentle mergers built many of these remote bodies. When the ...

The Kuiper belt is also a prime target for space missions. New Horizons, after its flyby of Pluto in 2015, explored another object in this region, Arrokoth, in 2019. How do we detect a distant planet?