Discover the mystery of Planet Nine, the elusive celestial body beyond Neptune. Explore the latest astronomical evidence and ...

A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

and 70 Scientists have discovered a new dwarf planet in our solar system, far beyond the orbit of Neptune 15 Most Expensive Dog Breeds You Can Adopt Today ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

The discovery of this object will certainly cause issues in the hunt for Planet 9 – a hypothetical planet larger than Earth – expected to exist far beyond the orbit of Pluto. The idea of a ...

Dusty clouds made of sand—that may rain iron—blanket a giant planet orbiting a young, sun-like star just 310 light-years from Earth, the James Webb Space Telescope has revealed. The discovery was made ...

But it's not Planet Nine. The newly-discovered object could also challenge theories of Planet 9, a proposed but unobserved large planet orbiting billions of miles beyond Neptune. Some scientists ...

"The existence of 2017 OF201 might suggest that Planet 9 or X doesn't exist," said Jiaxuan Li, another Princeton University astrophysical sciences grad student who collaborated on the research ...

The researchers define wide-orbit planets as having semimajor axes between 100 and 10,000 AU—distances that place them far beyond the reach of most traditional planet-forming disks.

Webb has captured a frigid exoplanet in a wildly tilted orbit, revealing a system shaped by past planetary violence and ...

Astronomers have captured silicate clouds and a mysterious disk around two giant young exoplanets, revealing surprises that ...