Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

A new program has discovered chaos in a nearby planetary system, which could explain the existence of a phenomenon ...

Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an ...

It’s been nearly 2 centuries since a planet was discovered in the solar system. But now scientists think they’ve uncovered ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Astronomers are adding three newly discovered moons to our solar ...

(CNN) — Astronomers have discovered three previously unknown moons around Uranus and Neptune, the most distant planets in our solar system. (CNN) — Astronomers have discovered three previously unknown ...

On Saturday, September 20, the shadow of Titan, the largest moon of Saturn, will cross the face of the "Lord of The Rings".

First, let’s compare the orbital characteristics of Pluto with those of other planets. Pluto has an orbital eccentricity (the degree to which its orbit deviates from a perfect circle) of 0.25, while ...