The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

Researchers have uncovered evidence that Uranus and Neptune could be far rockier on the inside than anyone expected.

For generations, school posters have sorted the Solar System into tidy boxes: four small rocky planets near the Sun, two huge ...

Which planet is the furthest from the sun? Some may think it’s Pluto, but it’s actually Neptune. Learn more about this ice giant and how it can help us understand more about planets in our Solar ...

Uranus and Neptune may not be the icy worlds we’ve long imagined. A new Swiss-led study uses innovative hybrid modeling to ...

WASHINGTON (Reuters) - Frigid and far-flung Neptune, our solar system's outermost planet, is adding to its reputation as an enigmatic world, with astronomers puzzled by a surprising drop in its ...

While Mercury is the innermost planet in the Solar System, on average it spends more time closer to Earth than Venus does.

Neptune, the eighth planet from the Sun – The Distant Planet. This bright blue orb hanging out near the edge of the solar system has garnered intrigue from sky watchers and scientists alike. Like its ...

WASHINGTON — Frigid and far-flung Neptune, our solar system’s outermost planet, is adding to its reputation as an enigmatic world, with astronomers puzzled by a surprising drop in its atmospheric ...