Far beyond Neptune, at the far outer rim of our Solar System, astronomers have spotted what looks like a hidden “structure” ...

Fresh mapping of the outer solar system has revealed a previously unseen pattern in the Kuiper Belt, the icy ring of debris beyond Neptune that has long been treated as a relatively simple torus of ...

Astronomers might have found evidence of a structure located farbeyond Neptune, potentially giving us clues about the solar ...

Astronomers have discovered a new, previously unnoticed concentration of icy bodies in the Kuiper Belt, dubbed the 'inner ...

A vast region of our solar system, called the Kuiper belt, stretches from the orbit of Neptune out to 50 or so astronomical ...

Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, an enormous, donut-shaped region of icy objects ...

A newly discovered cluster of objects called the “inner kernel” of the Kuiper belt could teach us about the early history of ...

"Similar to the asteroid belt, the Kuiper Belt is a region of leftovers from the solar system's early history. Like the ...

Survey observations using the Subaru Telescope’s ultra-widefield prime focus camera have revealed that there may be a population of small bodies further out in the Kuiper Belt waiting to be discovered ...

Nearly a century after Pluto’s discovery, astronomers are still hunting for mysterious planets beyond Neptune - including a ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labeled as planet X, prominent astronomers ...

(CNN) — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper’s authors have ...