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

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

Orbiting in reverse around Neptune, Triton is a cosmic rebel with a secret past. This video dives into the evidence that suggests this giant moon was not born around the blue planet but was violently ...

A team of researchers from the University of Zurich and the NCCR PlanetS is challenging our understanding of the solar system ...

Astronomers have uncovered a link between Neptune's shifting cloud abundance and the 11-year solar cycle, in which the waxing and waning of the Sun's entangled magnetic fields drives solar activity.

Point a laser at the planet Neptune tonight and it'll take 4 hours for the beam to arrive. For light itself, the fastest thing in the universe, to need so much time to get there, you'd guess the ...