Ever since the International Astronomical Union recognized Haumea and Makemake as dwarf planets in 2008, University of Maine ...

Astronomers using ALMA have captured the first evidence of a stellar jet interacting with a planet-forming disk, suggesting that planet formation may be far more chaotic than previously thought.

Bring up the former planet Pluto in conversation and you’re guaranteed to be met with a strong opinion. In one camp are those ...

In the dark, icy outskirts of our solar system—far beyond Neptune's orbit—astronomers have discovered a cosmic oddball that appears to be locked in an ...

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar System. Named 2023 KQ14, this rare “sednoid” follows an unusual ...

As Voyager 1 pushes beyond Pluto, it reveals a shocking truth,the solar system is far vaster and more mysterious than we ever imagined. What we once thought was its edge, the Kuiper Belt, is just ...

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International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one day resemble our own.

Pluto, the fourth ninth planet -- 11. Hidden secrets of the outer solar system -- 12. The plutinos -- 13. Is Pluto a planet? -- 14. Goldilocks -- Postscript. Current thoughts by other astronomers -- ...