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 outer ...

The Arrokoth encounter is the centerpiece of New Horizons' current extended mission, which runs through 2021. But the probe may well have another flyby in its future .

If you were on board the New Horizons spacecraft during its flyby of Arrokoth, the world would look visibly red to the human eye. That’s likely caused by compounds called tholins.

NASA launched New Horizons to explore Pluto. In 2019, it visited the furthest object in the Solar System we have seen up ...

A composite image based on data from NASA’s New Horizons spacecraft shows the icy Kuiper Belt object formerly known as 2014 MU69 or Ultima Thule, and now called Arrokoth.

The map of a distant, lobe-shaped object called Arrokoth (2014 MU69) now has official names to accompany the images from NASA's New Horizons spacecraft. After the spacecraft zoomed by the lobe ...

Behold, Arrokoth Image: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute. Following the Pluto flyby, mission scientists found another object for New Horizons ...

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 ...

NASA's New Horizons mission visited the pancake-shaped Arrokoth in early 2019. Amanda Kooser Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET.

In a statement, the space agency explained that on Jan. 1, 2019 the New Horizons spacecraft flew past an object in the Kuiper Belt, dubbed Arrokoth or 2014 MU69.

A snowman-shaped object that NASA probe New Horizons flew by in early 2019 now has a brand-new name. On November 12th, NASA officials announced that the item formerly known as MU69 would now have ...