Project Kuiper launched two prototype satellites in October 2023 and, within 30 days of launch, reportedly achieved a 100% success rate. The satellites were later intentionally removed from orbit in ...

Astronomers may have found a new candidate for the role of the ninth planet in the solar system.

The unusual orbit of a possible dwarf planet, known as 2017 OF201, makes it less likely that our solar system contains a ...

The mystery of how planets and icy objects formed in the farthest reaches of our solar system just took an exciting turn. A ...

Astronomers have long speculated about an unseen planet lurking in the solar system's outer edge. This hypothetical world, dubbed Planet Nine, could explain the unusual clustering ...

CAPE CANAVERAL SPACE FORCE STATION — The United Launch Alliance was preparing its Atlas V rocket to take up Amazon’s Project Kuiper satellites on Wednesday night, but stood down due to weather ...

and Sedna (found in 2004); and the promise of Brown and his colleagues is that more will soon be detected. Some researchers suspect there could even be Mars-sized objects lurking in this region of the ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects. A surprising chemical difference between Pluto and Sedna, another dwarf ...

In fact, it resides beyond the Kuiper belt and was viewable only as a fuzzy little dot shifting between the stars. Some refer to Sedna as an extreme trans-Neptunian object, or ETNO. Though poorly ...

“I think these objects will look a lot like the dwarf planet Sedna, but it’s possible they will look even more unusual.” Many Kuiper Belt objects are a deep reddish color as a result of ...

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 ...

Unlike the Kuiper belt, this ZM belt tilts off the ... who was vice president at the time), are members of this ZM belt. Sedna, for example, has a perihelion of 76 AU and could represent the ...