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 ...

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

The presence of water-ice in the debris disk around a young star could have helped facilitate the growth and development of ...

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

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

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

At the very edge of our solar system, beyond the grasp of Neptune and even past the icy sprawl of Pluto’s domain, a new ...

"Basically, we detected a water–ice reservoir." At long last, particles of water–ice have been discovered in the frozen Kuiper Belt of another star. The discovery, made by the James Webb Space ...

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 ...

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