Uranus and Neptune have been called the “ice giants” for decades. But in new research, that nickname might be more a misnomer ...

We actually know very little about what's going on inside Uranus and Neptune, causing researchers to propose that these ...

“Overall, our findings challenge the conventional classification of Uranus and Neptune as ’ice giants’ and underscore the ...

Astronomers used a telescope in Hawaii to find a new object on the outer edges of our solar system, helping to fuel evidence of a long-standing theory about Planet Nine, or Planet X. For years, ...

In pictures of the farthest planets from the sun, Uranus looks like a pale-green orb, while Neptune usually looks much bluer. A new analysis revealed their true colors. Here's NPR's Nell ...

Neptune takes approximately 14 years to transit through each zodiac sign, making it a generational planet. This means that ...

Point a laser at the planet Neptune tonight and it'll take 4 hours for the beam to arrive. For light itself, the fastest thing in the universe, to need so much time to get there, you'd guess the ...