A rare observation opportunity revealed the presence of a thin atmosphere around a small object beyond Pluto.

By Will Dunham WASHINGTON, May 4 (Reuters) - In the far reaches of our solar system - beyond the outermost planet Neptune - resides a host of icy and desolate celestial bodies. Among these objects, ...

The finding offers fresh insight into our solar system’s farthest, coldest objects in a region known as the Kuiper Belt.

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by ...

A team of professional and amateur Japanese astronomers found evidence for a thin atmosphere around a small body in the outer ...

Astronomers have confirmed, for the first time, a trans-Neptunian object with a thin atmosphere—something previously thought ...

Here’s what you’ll learn when you read this story: Every time an interstellar object comes whizzing into our Solar System, it brings with it a certain intrigue. Where is it from? How did it form? Why ...

A comet tearing through the inner solar system at roughly 58 kilometers per second formed between 10 and 12 billion years ago ...

An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about ...

Scientists at the Rubin Observatory have identified nearly 11,000 asteroids, including hundreds beyond Neptune and 33 previously unknown near-Earth asteroids.