The debate over Pluto’s planetary status has been ongoing since its reclassification as a “dwarf planet” in 2006 by the ...

In Roman mythology, Pluto is the god and ruler of the dead. For a return mission to the dwarf planet, Howett and her ...

Pluto, once considered the ninth planet of our solar system, has been a topic of intrigue since its reclassification as a ...

NASA unveiled new images of Pluto on Friday, revealing in unprecedented detail the craggy and mysterious features on the distant dwarf planet’s surface.

If you’re still mourning the little ball of ice formerly known as the ninth planet from the sun, you’re not alone. NASA admin Jim Bridenstine misses Pluto, too.

As you may have heard, Earth just had its first-ever rendezvous with Pluto, formerly known as the ninth planet in our solar system. NASA's New Horizons probe phoned home just before 9 p.m. Eastern ...

The spectacular photos which were captured by NASA's New Horizons spacecraft during its historic Pluto flyby on July 14, show close-up views of the dwarf planet's towering water-ice mountains and ...

NASA said the search for Planet 9 is a 21st-century version of the technique astronomer Clyde Tombaugh used to find Pluto in 1930, a discovery made 87 years ago this week.

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

This color view of Pluto and its largest moon Charon show the pair in a Pluto-centric view as seen by NASA's New Horizons spacecraft during one of nine observations between May 29 and June 3, 2015.

Pluto may have a polar ice cap, according to images taken from Nasa’s New Horizons probe around three weeks ago. The pictures taken by the craft’s Lorri telescope from a distance of over 100 ...

A super-speedy NASA probe marks six years of spaceflight Thursday, beginning the last leg of its journey to the small, faraway world of Pluto. The New Horizons spacecraft launched Jan. 19, 2006 ...