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

For decades, Uranus and Neptune have carried the tidy label of “ice giants,” shorthand for worlds built mostly from frozen ...

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

Mercury will oppose Uranus on Dec. 10, sparking surprising developments and unexpected breakthroughs in conversations. Here's ...

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

Earth has the perfect combination of a livable atmosphere and a protective magnetic field that prevents the Sun's harmful radiation and radioactive solar winds from damaging us, allowing us to live on ...

On Dec. 21, 1975, the notorious terrorist Carlos the Jackal led a raid on a meeting of OPEC oil ministers in Vienna. German ...

Saturn's huge moon Titan may not hide an ocean under its frozen surface but rather widespread pockets of liquid water, a new study finds. Titan is the largest of the 274 known moons orbiting Saturn.

Revelations rarely arrive on time. Mercury's opposition to retrograde Uranus in Taurus today creates a mental jolt. Expect ...

On Dec. 20, 2015, a landslide at an industrial park in Shenzhen, China, toppled dozens of buildings and killed 73 people.

Images from NASA's Galileo mission reveal a tantalizing starburst-like feature. Scientists call it a "wall demon." ...

A NASA spacecraft is making a close approach to the sun, repeating its record-breaking distance of 3.8 million miles from the ...