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 ...

On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

And today, over 12 years later, people still have strong opinions whenever you ask: Should Pluto be a planet again? - I'm not really sure that I have an opinion of whether or not Pluto should be a ...

Pluto may not be a planet any more, but you still have a chance to see the distant dwarf planet at one of Michigan's ...

For decades, Pluto was celebrated as the ninth planet of our solar system. However, in 2006, the International Astronomical Union (IAU) redefined what constitutes a planet, leading to Pluto’s ...

Tombaugh, of course, is the Kansan who discovered Pluto in 1930. He died in 1997, but the scientific dispute about Pluto’s status – whether it deserves to be labeled a “planet” – is ...

An curved arrow pointing right. Former planet Pluto may have been miscategorized yet again. A recent analysis of its atmosphere showed that it may be something we've never seen before — a comet ...

Planitia structure on its surface. Ever since NASA's New Horizons sent back the first-ever photos of Pluto in 2015, the dwarf planet's mysterious heart-shaped region has puzzled scientists.