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

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

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

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

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

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

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

On May 21, the International Astronomical Union’s Minor Planet Center announced the discovery of 2017 OF 201, which, because ...

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 ...

NASA's James Webb Space Telescope has made the first-ever and long-anticipated detection of ice outside of our own solar ...