Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Astronomers have found 2023 KQ14, nicknamed Ammonite, a rare sednoid with a unique orbit that challenges the Planet Nine ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

Typically, telescopes are synonymous with bringing far-off objects close, but the newest member of the solar system was ...

KQ14, nicknamed “Ammonite”, was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and aphelion that places it beyond the ...

A stronomers have discovered an incredibly rare non-planetary body lurking on the outer reaches of the Solar System, which ...

Japan's Subaru Telescope in Hawaii detected a faint, icy body. Now named 2023 KQ14, or Ammonite, it lies well beyond Pluto.

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar ...

Scientists have discovered a sednoid, named Ammonite, beyond Neptune. This icy object challenges existing theories about the outer solar system's formation.