For decades, Uranus and Neptune have been filed neatly into the “ice giant” drawer, shorthand for worlds built mostly from ...

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

The Gravity Assist Podcast is hosted by NASA's Director of Planetary Science, Jim Green, who each week talks to some of the greatest planetary scientists on the planet, giving a guided tour through ...

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

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of Ask a Spaceman and Space Radio, and author of How to Die in Space. He contributed this article to ...

Inscrutable ice giants Neptune and Uranus have only a thin rind of windy weather over their fluid contents, a team of planetary scientists say. The research published in the journal Nature relies on ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. From where we are in the Solar System, looking out at the distant ...

Astronomers obsessed with solving the mysteries of dark matter or dark energy should remember: To make a great discovery, sometimes you need to know what you’re looking for. Take Michel Lalande. He ...

Inscrutable ice giants Neptune and Uranus have only a thin rind of windy weather over their fluid contents, a team of planetary scientists say. The research published in the journal Nature relies on ...

A tiny moon of Neptune is a real fighter. The little space rock, now named Hippocamp, was probably chipped off a larger moon some 4 billion years ago and repeatedly smashed up and reassembled. Neptune ...

You probably already know that gravity can greatly influence cosmic objects as they make their way through space. We see this constantly in how the Sun's gravity causes planets to orbit it. And even ...