Recent observations of the Kuiper Belt have revealed anomalies that suggest the presence of an undiscovered Neptune-sized planet. This potential celestial body, often referred to as “Planet Y,” could ...

A Neptune-sized planet, TOI-3261 b, makes a scorchingly close orbit around its host star. Only the fourth object of its kind ever found, the planet could reveal clues as to how planets such as these ...

Neptune, the most distant major planet in the Solar System, has finally given up one of its longest held secrets. After decades of hints and near misses, astronomers now have crisp, direct views of ...

Uranus and Neptune may not be the icy worlds we’ve long imagined. A new Swiss-led study uses innovative hybrid modeling to reveal that these planets could just as easily be dominated by rock as by ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. We might have been very wrong about exactly what lurks below the ...

Deep inside planets like Uranus and Neptune, scientists may have uncovered a bizarre new state of matter where atoms behave in unexpected ways. Advanced simulations suggest that carbon and hydrogen, ...

They have missing "dipole magnetic fields." Here's why that's really weird. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. When NASA's Voyager 2 ...