At one point, the distant world Ultima Thule was assumed to be more or less a rocky ball. As New Horizons got closer, its shape was described as a bowling pin, then a snowman – and now it's changed ...

NASA’s New Horizons spacecraft flew past the Kuiper Belt Object (KBO) Ultima Thule (also known as 2014 MU69) on New Years’ Day, and while the American space agency has been sharing a steady stream of ...

A new animation shows Ultima Thule as NASA's New Horizons spacecraft approached it over the duration of seven hours. The animation reveals the object's rotation as it grows larger, and is joined by a ...

Given the vastness of outer space, it's no surprise we know very little about it. Most of the time, we can only make guesses based on images our terrestrial telescopes and a few orbital satellites ...

NASA's New Horizon's space probe made history on New Year's Day as it flew past a small, snowman-shaped object 4 billion miles away from Earth known as Ultima Thule. At 12:33 a.m. EST on Jan. 1, New ...