The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

For lovers of newly identified space objects, July has indeed been an exciting month. Last week, astronomers described ...

Astronomers have discovered "Ammonite," a mysterious object on the solar system’s edge whose unusual orbit challenges current ...

In the dark, icy outskirts of our solar system—far beyond Neptune's orbit—astronomers have discovered a cosmic oddball that ...

According to study co-author Dr Fumi Yoshida, Neptune is the only known massive object near the outer Solar System that could ...

Astronomers have made an extraordinary discovery at the outer edge of our solar system—a strange space rock that dances in ...

Trans-Neptunian objects (TNO) are some of our solar system's lesser-known objects. They number in the thousands, and they get their name from their orbits. These dwarf planets orbit the sun at a ...

The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday ...

A team of astronomers discovered a strange object in the outer solar system that is in a resonant orbit with Neptune.

Trans-Neptunian objects are the most distant solar system objects viewable from Earth. With some good equipment, a bit of luck, a bit of persistence and clear skies, you should be able to see some.

Extreme trans-Neptunian objects lead the way to Planet Nine Date: June 13, 2016 Source: Plataforma SINC Summary: In the race towards the discovery of a ninth planet in our solar system, scientists ...

The trans-Neptunian object Arrokoth, also known as Ultima Thule, which NASA's space probe New Horizons passed on New Year's Day 2019, may have changed its shape significantly in the first 100 ...