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

Learn more about a sednoid called Ammonite that has been detected in the outer reaches of the Solar System.

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

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

Typically, telescopes are synonymous with bringing far-off objects close, but the newest member of the solar system was discovered using wide-field imaging. The Subaru Telescope has spotted a distant ...

In the icy, dark expanse beyond Neptune, a cosmic fossil has surfaced that threatens to upset decades-old assumptions about the solar system’s secret structure. The new discovery of “Ammonite,” a ...

The sednoid 2023 KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with ...

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