Scientists have seemingly settled long-standing arguments about whether the components of Earth originated from the inner or ...

Rings were first discovered in 1977 around Uranus, when astronomers observed a star dim multiple times as the planet passed ...

Although Uranus possesses rings, they are not as structured and bright as the rings of Saturn. They are rather dark, narrow, and tough to study.

The cold, icy world of Uranus is framed by a pair of rings that orbit the planet at twice the distance of its main ring ...

Astronomers using the W. M. Keck Observatory on Maunakea, Hawaiʻi Island are revealing new insight into the composition and ...

Astronomers surveying the outer solar system have revealed that a rare object far beyond Neptune is moving in sync with the eighth planet in an unexpected way. Called 2020 VN40 and first discovered in ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

There may be a warp in the Kuiper Belt, possibly caused by “Planet Y” — a Mercury-to-Earth-sized world that orbits the sun way beyond the orbit of Neptune. Is there a mysterious “Planet Y” orbiting ...