The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's ...

New data captured by the James Webb Space Telescope has finally given astronomers new clues about how Pluto cools itself.

NASA’s New Horizons mission has taken humanity closer than ever to understanding the mysterious dwarf planet, Pluto. In 2015, ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

A new dwarf planet extremely far from the sun may have just been discovered ... rewrite the space map. This icy world, temporarily named 2017 OF201, could be a distant cousin of Pluto — and ...

The diameter of Pluto, meanwhile, is 2,377 km. Further observations, potentially using radio telescopes, are needed to determine the object's exact size. Cheng discovered the object as part of an ...

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets.

Dozens of NASA's missions to explore the cosmos could be in jeopardy under a budget proposal from the Trump administration.

Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show.