For years, the idea of a mysterious “Planet Nine” lurking on the edges of our solar system has captivated astronomers and ...

Chiefly, the finding could help explain why Pluto, the largest known object in the Kuiper Belt — a vast region of icy bodies ...

The Dark Energy Spectroscopic Instrument uses a telescope in Tucson, Arizona, to create a map of the universe's ...

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Solar and cosmochemical data indicate high levels of carbon, nitrogen, and oxygen in the Sun. Researchers have unveiled a new ...

Earth' 5-7 times Earth's mass might lurk in the Kuiper Belt, reshaping our solar system. Planet Nine could explain mysterious ...

Pluto may have been downgraded from full-planet status, but that doesn't mean it doesn't hold a special place in scientist's ...

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"Solar system formation models using the new solar composition successfully reproduce the compositions of large Kuiper Belt ...

In the time Pluto was found, classified as a planet and reclassified as a dwarf planet, it has not completed one orbit. One ...