Imagine predicting an entire planet's existence with nothing but math, and then finding it right where the numbers ...

Neptune’s supersonic winds and icy storms revealed a planet so extreme that it forever changed our picture of the solar ...

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

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

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

The most elusive planetary aurora in the Solar System has finally been revealed in all its gently glowing glory. Far from the Sun, and Earth, the sky-blue planet Neptune has been captured shimmering ...

Although they are technically gas giants, Uranus and Neptune are referred to as "ice giants" due to their composition.

Neptune retrograde will occur from July 2 until Dec. 7. Read on for a deeper meaning behind the cosmic event NASA In astrology, the planet Neptune is said to oversee our dreams, creativity, illusions, ...

New models suggest Uranus and Neptune may hold far more rock than expected, raising questions about how these distant planets formed.

PRINCETON, N.J. (CNN/CNN Newsource/WKRC) — A new planet was possibly discovered beyond the planet Neptune. Researchers from the Institute for Advanced Study's School of Natural Sciences have announced ...

New research by a University of Victoria PhD student is challenging popular theory about how part of our solar system formed. At the meeting of the American Astronomical Society’s Division of ...