Billions of miles (kilometers) from the Sun, Uranus and Neptune are the most distant planets in our Solar System. Long ...

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

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: ...

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

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

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

For decades, scientists have believed that Uranus and Neptune are “ice giants,” planets made mostly of icy materials like water, ammonia and methane. But a new study from the University of Zurich and ...

Launched between August and September 1977, Voyager 1 and Voyager 2 are the oldest and most distant probes built that are still active. They are also the only probes to have left our solar system and ...

Images taken by the Hubble Space Telescope document the formation of a Great Dark Spot on Neptune for the first time, report researchers in a new study. Like Jupiter’s Great Red Spot, Neptune’s Great ...

Bob’s Blog: "It's been a profound experience to actually feel how slow we are by watching myself grow old as we take our first baby steps among the stars" ...

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.