Uranus sits far beyond the orbit of Saturn, yet its smallest moons are suddenly at the center of a quiet revolution in outer ...

The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

New models suggest Uranus and Neptune may hold far more rock than expected, raising questions about how these distant planets formed.

NASA scientists have concluded that four of Uranus’ largest moons likely contain an ocean layer between their cores and icy crusts after re-analyzing data from the Voyager spacecraft and new computer ...

This image made from video provided by Durham University astronomy researcher Jacob Kegerreis shows a computer simulation generated by the open-source code SWIFT that depicts an object crashing into ...

A panel of planetary scientists has determined that Uranus should be a focus for future exploration by NASA. Should the recommendation go ahead, the agency could launch a $4.2 billion orbiter and ...

WASHINGTON >> Uranus is a lopsided oddity, the only planet to spin on its side. Scientists now think they know how it got that way: It was pushed over by a rock at least twice as big as Earth.

Imagine a tiny dusty moon, about one-seventh the size of our planet’s, with polygonal topographical features extending for hundreds of miles, and cliffs taller than any you’d find anywhere on Earth.

WASHINGTON (AP) — Uranus is a lopsided oddity, the only planet to spin on its side. Scientists now think they know how it got that way: It was pushed over by a rock at least twice as big as Earth.