The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

As the gatekeepers to the Kuiper Belt, Charon and Pluto are a unique double dwarf planet system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Let’s talk about destruction and creation, burning towers, rock bottom, regeneration and using ashes as clay. Pluto, our ...

A very rare treat is about to grace Earth's night skies.

It saw the discovery of dwarf planet Eris and how ... No prize for guessing that Pluto and Eris are too light to pass that threshold. Eris has the most apt name ever given to a celestial body.

While Charon is currently listed as a satellite or moon by the International Astronomical Union (IAU), consideration is being given to it perhaps being classified as a dwarf planet in its own right, ...

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