Astronomers surveying the outer solar system have revealed that a rare object far beyond Neptune is moving in sync with the eighth planet in an unexpected way. Called 2020 VN40 and first discovered in ...

Uranus and Neptune may not be ice giants. New scientific models reveal a rocky composition that challenges what we know.

Add Yahoo as a preferred source to see more of our stories on Google. Something doesn't quite add up about the orbits of our solar system's eight planets and their hundreds of moons, a new study hints ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Six of our cosmic neighbors are expected to line up across the night ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory about the possibility of a giant ninth planet. The dwarf planet's existence ...

Deep within Uranus and Neptune, immense pressure and heat are transforming carbon into diamonds that rain down through the ...

This video explores the key characteristics of each planet within our solar system. Suitable for teaching science at KS1 and ...

James Webb found Neptune's moon Nereid has an unusual icy surface, suggesting it formed alongside the planet instead of being captured later.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Astronomers have found a distant celestial body — ...