Pluto’s mesmerizing heart was captured for the first time in 2015 by NASA’s New Horizons mission and has intrigued scientists ever since. The researchers believe that billions of years ago ...

The gas giants outside our solar system are not capable of hosting extraterrestrial life, but do offer clues in a lingering ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Butch Wilmore and Suni Williams have nearly half a century of combined experience as astronauts. But this is just their third ...

Although previous images showed that something was happening on Pluto, with an average temperature of -240C, many people assumed it was a cold and relatively dead world. That was until NASA's 'New ...

NASA's New Horizons spacecraft made its closest approach to Pluto Tuesday morning, and even though we've only seen a small trickle of data so far, the findings are already surprising scientists.

Gonggong is a dwarf planet and a member of the scattered disc beyond Neptune. As of 2019, its distance from the Sun is 88 AU, and it is the sixth-farthest known Solar System object.

The only Kuiper Belt objects that have been explored in detail are Pluto and the smaller object Arrokoth, which NASA's New Horizons mission visited in 2015 and 2019, respectively. New Horizons ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.