Neptune’s supersonic winds and icy storms revealed a planet so extreme that it forever changed our picture of the solar ...

Although they are technically gas giants, Uranus and Neptune are referred to as "ice giants" due to their composition.

Our fundamental understanding of Neptune and Uranus may be completely wrong, say researchers rethinking our solar system.

Scientists are probing decades of claims and studies about our Solar System’s two most distant major planets Uranus and Nepture, with unusual results which has surprised them ...

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

When you buy through links on our articles, Future and its syndication partners may earn a commission. What it is: One of the final photographs of Neptune taken by NASA's Voyager 2 probe Where it is: ...

For decades, scientists have believed that Uranus and Neptune are “ice giants,” planets made mostly of icy materials like ...

Why it's so special: Only one spacecraft has ever visited the eighth and most distant planet from the sun. On Aug. 25, 1989, NASA's Voyager 2 spacecraft took the first-ever close-up images of Neptune.