Pluto remains one of the most misunderstood objects in the solar system. From its classification to its physical ...

Pluto is so far away from Earth that everything we know about it can be written down on a couple of 3 x 5 inch index cards. But Pluto will come into clearer focus in a few years' time, though, as NASA ...

(CNN) — A huge heart-shaped feature on the surface of Pluto has intrigued astronomers since NASA’s New Horizons spacecraft captured it in a 2015 image. Now, researchers think they have solved the ...

Arizona has declared Pluto its “official state planet” — despite it being relegated to “dwarf planet” status nearly two decades ago. Gov. Katie Hobbs signed legislation on Friday and afterward dodged ...

Scientists have discovered carbon dioxide and hydrogen peroxide on the surface of Charon, Pluto's largest moon, offering clues about the origins of the space rock and other celestial objects in the ...

New research suggests that Pluto may have acquired its most massive moon, Charon, through an ancient grazing impact, which the science team refers to as a “kiss and capture”. The study uses computer ...

Researchers think they have solved the mystery of how the distinctive heart came to be — and it could reveal new clues about the dwarf planet’s origins Researchers think they have solved the mystery ...