Scientists have identified a new "superionic" state of carbon and hydrogen that may exist deep inside Uranus and Neptune.

We actually know very little about what's going on inside Uranus and Neptune, causing researchers to propose that these planets be called "rocky giants" instead.

The interiors of ice giant planets like Uranus and Neptune could be home to a previously unknown state of matter, according to new computational simulations by Carnegie's Cong Liu and Ronald Cohen.

Deep inside the distant planets Uranus and Neptune, matter may exist in a bizarre form unlike anything we experience on Earth ...