Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

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

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 ...

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 ...

icy moons and dwarf planets in the outer solar system appear to have liquid oceans below layers of thick ice. Recent research suggests there could even be oceans inside bodies beyond Pluto.

The love story between Pluto and Charon may have started with a kiss. A new study suggests the dwarf planet and its scarcely smaller moon likely came together in a collision that saw them ...

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

An amateur astronomer discovered Pluto 95 years ago today. The former planet will complete an orbit in another 153 years.

Pluto, our planet of profound change and ultimate reckoning, has set up shop in Aquarius, and the energy of the dwarf daddy of death’s transit will have a weighty effect on all of us.

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

This provides another piece of the puzzle to understand how planets and ... Pluto-Charon Formation Scenario Mimics Earth-Moon System Jan. 7, 2025 — A researcher has used advanced models that ...

The building blocks of life could have been delivered to solar system dwarf planet Ceres by one or more space rocks from the outer asteroid belt.