Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

The large mound structures that dominate one of the lobes of the Kuiper belt object Arrokoth are similar enough to suggest a common origin, according to a new study led by Southwest Research ...

Experts in France and the US say a snowman-shaped space rock called Arrokoth, in the outskirts of our solar system beyond ...

Unlike Earth, where the Moon orbits the planet, Pluto and Charon orbit each other ... resembling the two lobes of the object Arrokoth—another contact binary in the outer solar system—which ...