Far beyond the edge of the solar system, Pluto is revealed as a far more dynamic and mysterious world than once believed.

PLUTO is hazier than scientists expected and appears to be covered with flowing ice. The team responsible for the New Horizons flyby of Pluto recently released new pictures of the previously ...

Pluto’s frozen face looks dead at first glance, but its most famous feature hints at something far stranger than a simple ice shell. The bright heart-shaped region, and especially the basin known as ...

HOUSTON (Reuters) - Scientists have found evidence that tiny, distant Pluto harbors a hidden ocean beneath the frozen surface of its heart-shaped central plain containing as much water as all of Earth ...

The first pictures sent back by NASA's New Horizons probe after this week's unprecedented Pluto flyby reveal towering mountains made of frozen water — and a giant dark impact basin on top of its ...

Just 300 miles (500 kilometers) or so across, this mini Pluto is thought to be the solar system's smallest object yet with a ...

A tiny, little-known world beyond Pluto appears to have an atmosphere, Japanese astronomers said Monday, defying what had ...

For no explainable practical reason, humans are enamored with – and even empathetic toward – specific inanimate objects. Our first car. A choice coffee mug. And for a particular subset of the ...