Researchers accounted for the previously overlooked structures of the dwarf planet and moon in computer simulations of a ...

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

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.

"We were definitely surprised by the 'kiss' part of kiss-and-capture. There hasn't really been a kind of impact before where the two bodies only temporarily merge before re-separating!" ...

Pluto has five moons, but Charon stands out from the rest. Charon is half the size of Pluto, “making it the largest known moon relative to its parent planet in our solar system,” NASA notes.

The theory could explain how the dwarf planet (yeah, we wish Pluto was still a planet, too) could snare a moon that is around half its size. This "kiss and capture" process represents a new theory ...

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The theory could explain how the dwarf planet (yeah, we wish Pluto was still a planet, too) could snare a moon that is around half its size. The team behind this research thinks that two frigid ...