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

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 ...

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

KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...

A team of astronomers led by the Center for Astrophysics | Harvard & Smithsonian has discovered a rare object far beyond ...

An oddly tilted object beyond Neptune moves in perfect sync, one orbit for every ten of Neptune’s, and scientists are ...

Astronomers have discovered a bizarre object in the outer solar system, 2020 VN40, that dances to Neptune’s gravitational ...

Astronomers just found a distant space rock called 2020 VN40, orbiting the Sun way out past Neptune. This icy object takes about 164 years to make one lap around the Sun—talk about a long trip! The ...

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.

Learn more about a sednoid called Ammonite that has been detected in the outer reaches of the Solar System.

"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | ...