Astronomers have found a new minor planet beyond Pluto. This object, named 2017 OF201, is quite large. It orbits far from the ...

Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the ...

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

The mystery of how planets and icy objects formed in the farthest reaches of our solar system just took an exciting turn. A ...

At long last, particles of water–ice have been discovered in the frozen Kuiper Belt of another star. The discovery, made by ...

The discovery of water ice around a distant star is allowing scientists to study how the key ingredient for life is delivered ...

Astronomers may be on the verge of identifying a mysterious object within our Solar System. Recent research suggests a ...

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

In a thrilling development that challenges long-held assumptions about the outer reaches of our solar system, astronomers ...

In the cold, distant reaches of the Solar System, far beyond Pluto, astronomers have just identified what could be a new ...