Poor Pluto. On August 24, 2006 at the International Astronomy Union (IAU) General Assembly the ninth planet was scrubbed only 76 years after its discovery. Even weirder is that it actually got voted ...

The images of Pluto that the New Horizons probe beamed across 3 billion miles of hard vacuum are, in a word, breathtaking. Towering mountains of ice, smooth plains, a wan alien landscape. They're ...

Dwarf planets and moons, illustration. A dwarf planet is a planetary mass object orbiting the Sun that is not a true planet. They are massive enough for their self-gravities to crush them into spheres ...

It’s been 18 years since Pluto’s celestial status was called into question—yet the matter seems far from settled. We asked experts from both sides to make their case. This 2015 NASA image of Pluto ...

Today, the dwarf planet Pluto orbits the sun from the edge of our solar system and its surface temperature is an inhospitable negative 378 to negative 396 degrees Fahrenheit. But a new study suggests ...

Pluto, with its heart-shaped glacier, as captured by the New Horizons spacecraftJPL/NASA Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it, of course.

Pluto's continued existence owes much to the gravity of Jupiter and Neptune. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Pluto is lucky to ...

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. If you were born in the last century you might ...