The outer solar system is a frigid place where liquid water isn't expected to exist.

While NASA proposes a mission to Neptune's moon, Triton, which could have an ocean capable of supporting life, researchers believe Neptune and Uranus are composed "primarily" of a strange form of ...

What is so unusual about Neptune's moons? Neptune is the only giant planet in the Solar System without a system of large ...

Diamond rain? Super-ionic water? These are just two proposals that planetary scientists have come up with for what lies beneath the thick, bluish, hydrogen-and-helium atmospheres of Uranus and Neptune ...

While scientists have amassed considerable knowledge of the rocky planets in our solar system, like Earth and Mars, much less is known about the icy water-rich planets, Neptune and Uranus. In a new ...

Scientists say that water worlds – planets with deep, global oceans – might be fairly common in our Milky Way galaxy. These worlds would have even more water than Earth. Could anything live there? And ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have confirmed the existence of superionic ice water—water ...

When exoplanet TOI-674 b was first discovered, it caught the attention of Jonathan Brande for several reasons. “It's a good-sized planet orbiting a small star — it has a very large transit signal,” ...