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.

A recently discovered celestial body is rewriting our knowledge of the Kuiper Belt and maybe challenging the existence of the ...

A team of scientists at the Institute for Advanced Study School of Natural Sciences in Princeton, New Jersey, might have found a new dwarf planet, potentially leading to more evidence of a ...

By Kenneth Chang Kenneth Chang has been reporting on dwarf planets and their definitions ... Dr. Brown also discovered Sedna, a surprisingly large world — more than 700 miles wide — that ...

The new object is one of the most distant visible objects in our solar system. Astronomers have indeed discovered a potential new dwarf planet in the outer reaches of our solar system, far beyond ...

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

However, a 2004 discovery changed that. Scientists found that Sedna — a potential dwarf planet located beyond the Kuiper Belt — had a weird orbit around the sun. Its unusual trajectory hinted ...

Although the photo does show Pluto, the colors within it appear to have been enhanced. On May 20, 2024, X account @MAstronomers posted a colorful image of a celestial object and claimed it showed ...

Scientists have been searching for a ninth planet to explain the orbital eccentricities of Uranus and Neptune (and dwarf planets like Sedna and Pluto) for more than a century. For the past decade ...

The European Space Agency’s CHEOPS telescope usually searches for planets outside our solar system, but recently it made a discovery closer to home: a large ring around the dwarf planet Quaoar ...