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 ...

Researchers have uncovered evidence that Uranus and Neptune could be far rockier on the inside than anyone expected.

Fresh simulations show there is a chance Uranus and Neptune might actually be rock-rich worlds wrapped in thinner icy layers.

The two outermost planets in the solar system are generally considered ice giants, yet we know little about their interiors.

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For decades, school posters and science museum displays have grouped Uranus and Neptune together as “ice giants,” a tidy ...

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The planets Uranus and Neptune could be hiding significantly more rock in their interiors than previously assumed. This new ...