Arrokoth is a planetesimal in the Kuiper Belt, a vast stretch of space beyond Neptune that holds remnant building blocks of the solar system leftover from our cosmic neighborhood's formation.

Arrokoth, which the New Horizons team nicknamed " Ultima Thule," is one of many frigid bodies way out in the Kuiper Belt, the solar system's "third zone" beyond Neptune's orbit.

Moreover, when viewed from space, the PAHs, glucose and other sugars would appear red, scientists reported. Sugar worlds in the Kuiper Belt like Arrokoth may have impacted Earth early in its ...

Arrokoth, previously named Ultima Thule, was pictured early last year by Nasa's New Horizons spacecraft. Images of the "snowman" released in January 2019 wowed the world – and space scientists ...

Not only did New Horizons achieve a next-to flawless flyby of Arrokoth, the most distant object ever visited, but buried in its gigabytes of data—which have been trickling back to Earth ever ...

A 3-D reconstruction of Arrokoth’s shape indicates that the larger lobe measures 12.8 by 12.3 wide and 5.8 miles thick, while the smaller lobe is 9.6 by 8.6 miles wide and 6.1 miles thick.

The trans-Neptunian object Arrokoth, also known as Ultima Thule, which NASA's space probe New Horizons passed on New Year's Day 2019, may have changed its shape significantly in the first 100 ...

NASA’s New Horizons spacecraft zoomed past a city-sized object just over a year ago. The most distant object ever explored, since named Arrokoth, was a “planetesimal” lurking quietly in the ...

Arrokoth is a bizarre 'snowman-shaped' red rock in our solar system, around 4 billion miles away from the sun. Pictured, Arrokoth in a 2019 snap by NASA's New Horizons spacecraft ...

Arrokoth is simply too far from the Sun—over 40 times the Earth's distance from the Sun—for light to have had a significant effect on the bodies' motion. Collisions haven't been frequent ...

Arrokoth is a planetesimal in the Kuiper Belt, a vast stretch of space beyond Neptune that holds remnant building blocks of the solar system leftover from our cosmic neighborhood's formation.

Arrokoth, which the New Horizons team nicknamed " Ultima Thule," is one of many frigid bodies way out in the Kuiper Belt, the solar system 's "third zone" beyond Neptune's orbit.