Researchers have unveiled a cosmic cycle where carbon, created in the explosions of stars, travels through space via a ...

The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...

Scientists propose Pluto and its moon Charon formed through a “kiss and capture” event 4.5 billion years ago, challenging previous theories about their unique size ratio and orbital relationship.

A new theory about Pluto’s largest moon, Charon, could alter how planetary systems are taught in U.S. schools. Scientists ...

“Because Pluto is rotating rapidly prior to the collision, and because Charon lies mostly outside of their corotation zone, ...