For generations, Uranus and Neptune have stood as the solar system’s frozen outliers, distant blue worlds believed to be ...

The finding comes with significant new suggestions about the solar system ...

Astronomers have found that a weird space rock at the edge of the solar system is locked in a rhythmic dance with Neptune. The object, designated 2020 VN40, is part of a family of distant solar system ...

"Rather than 'icy' or 'rocky,' we should simply call them minor giants." ...

The atmosphere is between 5 million and 10 million times thinner than Earth's atmosphere. A very small body, far from the sun ...

A tiny world that orbits way beyond Neptune surprised astronomers with a thin atmosphere that they did not expect to find.

A ninth planet may be tugging at the outer edges of our solar system. Astronomers were studying distant icy objects beyond Neptune. In 2014, astronomers found six Kuiper Belt objects clustered in ...

A passing star, or a stellar flyby, with the potential to pull Neptune out of its orbit by just 0.1%, could mean catastrophe for the entire solar system. But don’t worry — it won’t happen in our ...

Astronomers have spotted something surprising in the far outer Solar System—a faint, short-lived atmosphere clinging to a ...