Trans-Neptunian objects (TNO) are some of our solar system's lesser-known objects. They number in the thousands, and they get ...

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

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

In a groundbreaking discoverypublished in The Planetary Science Journal, a team of astronomers led by the Center for ...

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

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

Despite the powerful telescopes that modern astronomers have to work with, the distant reaches of the Solar System are still ...

A telescope has discovered a new world on the edge of the Milky Way – potentially confirming the ‘Planet X’ theory. Beyond ...

The discovery was made by astronomers using the Subaru Telescope, which is situated atop a dormant volcano in Hawaii.

Harvard & Smithsonian have discovered a rare trans-Neptunian object, 2020 VN40, orbiting in perfect sync with Neptune.

These elusive objects may hold secrets to how the Solar System formed, and even hint at the presence of a mysterious Planet Nine lurking in the shadows. Now, the Subaru Telescope has spotted a new one ...

The James Webb Space Telescope has observed surface ice methanol — a key building block for organic compounds necessary for life, including sugars — on trans-Neptunian objects.