According to Dr. Grundy, Pluto is a planet. "I use the word 'planet' to refer to it, and most of the planetary science ...

In fact, Charon and Pluto are so similar in size that they are considered a double dwarf planet system, not a planet and moon. Charon is smaller than Earth's moon. In fact, Pluto is smaller than ...

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

Filmmaker Adam Nemoy helps celebrate the 90th anniversary of Pluto's discovery this month at the 6th annual 'I Heart Pluto' ...

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, ...

Scientists have discovered a new type of planetary collision called “kiss-and-capture,” where Pluto and proto-Charon briefly ...

Pluto, our planet of profound change and ultimate reckoning, has set up shop in Aquarius, and the energy of the dwarf daddy of death ... These themes will no doubt resurface when Pluto returns ...

She was not involved in the new research ... For example, Charon’s collision with Pluto would have raised the temperature of the the dwarf planet’s ice shell, which may have caused it ...

Pluto likely acquired large moon Charon in a “kiss and capture” collision billions of years ago. It may have created a subsurface ocean on the icy dwarf planet.