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

Uranus and Neptune are the two furthest planets in the Solar System and have been visited only once by human spacecraft – by Voyager 2 over 30 years ago – so there is a lot about them that we do not ...

Scientists have found that Uranus is emitting its own internal heat — even more than it receives from sunlight — and this discovery contradicts observations of the distant gas giant made by NASA's ...

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

Scientists think Uranus’s moon Ariel once had a hidden ocean beneath its icy shell. The moon’s orbit stretched enough to ...

There’s a new moon on the block. A research team peering into unexplored corners of space revealed this week that our solar system harbors a secret moon that’s tucked away near Uranus. The moon was ...

A new paper suggests that Uranus might still contain evidence of the catastrophic impact that knocked it on to its side and shaped much of its evolutionary history. If it's accurate, there are some ...

Evidence points to a long-lost ocean beneath Ariel’s icy crust. Tides and orbit shifts may have cracked its surface billions of years ago. Growing evidence indicates that a deep ocean may lie hidden ...

It's been almost 40 years since Voyager 2 flew past Uranus, but its readings from that whistlestop flyby have remained some of the most important for how we understand the planet. But new data from a ...

NASA released Sept. 21 an image of Neptune taken by the James Webb Space Telescope, showing storms in the planet's atmosphere and its ring system. Credit: NASA, ESA, CSA, STScI HELSINKI — Scientists ...

Ariel, one of Uranus' icy moons, may once have concealed a vast ocean more than 100 miles (170 kilometers) deep beneath its ...