Clyde Tombaugh didn't set out to discover Pluto when he sent his sketches of the night sky to Lowell Observatory in Flagstaff ...

It has a methane, nitrogen and carbon monoxide atmosphere and a surface temperature of ... adopted a resolution to reclassify Pluto as a dwarf planet. The reasoning was that it didn't satisfy ...

Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of course. Even if ...

which visited the dwarf planet in 2015. 1 - Instead of an ancient, inert rock, we’ve found an icy world with active processes creating fresh surfaces. The rugged surface of Pluto is younger than ...

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

Alongside Pluto, Eris was also classified as a dwarf planet under the new criteria ... mission provided stunning images of Pluto’s surface, revealing glaciers, mountains, and potential ...

Before Pluto was demoted to dwarf planet status, it was really nothing ... Pluto is far from a lifeless rock — it has a dynamic surface, an atmosphere, and potential geological activity, and ...